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flu, where 18 of the 19 were determined to have lowered immune systems. Because of this, many mothers who have just given birth are strongly encouraged to get a flu shot because their immune systems are vulnerable. Also, studies have shown that people between the ages of 15 and 44 have the highest rate of infection. Although most people now recover, having any conditions that lower one's immune system increases the risk of having the flu become potentially lethal. In
Northern Ireland now, approximately 56% of all people under 65 who are entitled to the vaccine have gotten the shot, and the outbreak is said to be under control.
694:
539:
1001:. As well as persisting in pigs, the descendants of the 1918 virus have also circulated in humans through the 20th century, contributing to the normal seasonal epidemics of influenza. However, direct transmission from pigs to humans is rare, with only 12 recorded cases in the U.S. since 2005. Nevertheless, the retention of influenza strains in pigs after these strains have disappeared from the human population might make pigs a reservoir where influenza viruses could persist, later emerging to reinfect humans once human immunity to these strains has waned.
291:
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but all of the subtypes are continuously circulating in swine herds. In the EU region whole-virus vaccines are available which are inactivated and adjuvanted. Vaccination of sows is common practice and reveals also a benefit to young pigs by prolonging the maternally level of antibodies. Several commercial vaccines are available including a trivalent one being used in sow vaccination and a vaccine against pdmH1N1(2009). In vaccinated sows multiplication of viruses and virus shedding are significantly reduced.
825:
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vaccines. Since the protective ability of influenza vaccines depends primarily on the closeness of the match between the vaccine virus and the epidemic virus, the presence of nonreactive H3N2 SIV variants suggests current commercial vaccines might not effectively protect pigs from infection with a majority of H3N2 viruses. The United States
Department of Agriculture researchers say while pig vaccination keeps pigs from getting sick, it does not block infection or shedding of the virus.
1150:(ILI) was reportedly widespread among the pigs exhibited at the fair. Of the 25 swine exhibitors aged 9 to 19 at the fair, 19 tested positive for antibodies to SIV, but no serious illnesses were seen. The virus was able to spread between people, since one to three health care personnel who had cared for the pregnant woman developed mild, influenza-like illnesses, and antibody tests suggested they had been infected with swine flu, but there was no community outbreak.
788:
51:
282:, in turn causing economic loss to farmers. Infected pigs can lose up to 12 pounds of body weight over a three- to four-week period. Influenza A is responsible for infecting swine and was first identified in 1918. Because both avian and mammalian influenza viruses can bind to receptors in pigs, pigs have often been seen as "mixing vessels", facilitating the evolution of strains that can be passed on to other mammals, such as humans.
974:, when pigs became ill at the same time as humans. The first identification of an influenza virus as a cause of disease in pigs occurred about ten years later, in 1930. For the following 60 years, swine influenza strains were almost exclusively H1N1. Then, between 1997 and 2002, new strains of three different subtypes and five different genotypes emerged as causes of influenza among pigs in North America. In 1997–1998,
531:
478:
in 2004 at the
University of Iowa. This study, among others, forms the basis of a recommendation that people whose jobs involve handling poultry and swine be the focus of increased public health surveillance. Other professions at particular risk of infection are veterinarians and meat processing workers, although the risk of infection for both of these groups is lower than that of farm workers.
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includes not adding pigs carrying influenza to herds that have not been exposed to the virus. The virus survives in healthy carrier pigs for up to three months and can be recovered from them between outbreaks. Carrier pigs are usually responsible for the introduction of SIV into previously uninfected herds and countries, so new animals should be
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cause. According to science writer
Patrick Di Justo, however, by the time the truth was known—that the deaths were not proven to be related to the vaccine—it was too late. "The government had long feared mass panic about swine flu—now they feared mass panic about the swine flu vaccinations." This became a strong setback to the program.
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Americans. This could be due to several factors. Historically, there has been mistrust of vaccines and of the medical community from
African Americans. Many African Americans do not believe vaccines or doctors to be effective. This mistrust stems from the exploitation of the African American communities during studies like the
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and some other islands. Makeshift flu clinics were opened in Malé. Schools in the capital were closed, prison visitations suspended, several events cancelled, and all non-essential travel to other islands outside the capital was advised against by the HPA. An influenza vaccination program focusing on
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disorder, affecting some people who had received swine flu immunizations. Although whether a link exists is still not clear, this syndrome may be a side effect of influenza vaccines. As a result, Di Justo writes, "the public refused to trust a government-operated health program that killed old people
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said he felt tired and weak. He died the next day, and four of his fellow soldiers were later hospitalized. Two weeks after his death, health officials announced the cause of death was a new strain of swine flu. The strain, a variant of H1N1, is known as A/New Jersey/1976 (H1N1). It was detected only
927:
In Europe the avian-like H1N1 and the human-like H3N2 and H1N2 are the most common influenza subtypes in swine, of which avian-like H1N1 is the most frequent. Since 2009 another subtype, pdmH1N1(2009), emerged globally and also in
European pig population. The prevalence varies from country to country
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strategies for SIV control and prevention in swine farms typically include the use of one of several bivalent SIV vaccines commercially available in the United States. Of the 97 recent H3N2 isolates examined, only 41 isolates had strong serologic cross-reactions with antiserum to three commercial SIV
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program was plagued by delays and public relations problems. On
October 1, 1976, immunizations began, and three senior citizens died soon after receiving their injections. This resulted in a media outcry that linked these deaths to the immunizations, despite the lack of any proof the vaccine was the
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Influenza viruses infect both humans and pigs, but do not infect birds. Transmission between pigs and humans have occurred in the past. For example, influenza C caused small outbreaks of a mild form of influenza amongst children in Japan and
California. As a result of the limited host range and lack
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can co-occur. Vaccination of these workers against influenza and surveillance for new influenza strains among this population may therefore be an important public health measure. Transmission of influenza from swine to humans who work with swine was documented in a small surveillance study performed
1364:) to G4 EA H1N1 and found 35 (10.4%) positive. Among another 230 people screened who did not work in the swine industry, 10 (4.4%) were serum positive for antibodies indicating exposure. Two cases of infection caused by the G4 variant have been documented as of July 2020, with no confirmed cases of
1194:
Since
November 2009, 14 deaths as a result of swine flu in Northern Ireland have been reported. The majority of the deceased were reported to have pre-existing health conditions which had lowered their immunity. This closely corresponds to the 19 patients who had died in the year prior due to swine
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If a human becomes sick with swine flu, antiviral drugs can make the illness milder and make the patient feel better faster. They may also prevent serious flu complications. For treatment, antiviral drugs work best if started soon after getting sick (within two days of symptoms). Beside antivirals,
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between 2011 and 2018. While other variants of the virus have appeared and diminished, the study claimed the G4 variant has sharply increased since 2016 to become the predominant strain. The
Chinese Ministry of Agriculture and Rural Affairs rebutted the study, saying that the media had interpreted
1034:
analysis of more recent strains of influenza in humans, birds, and other animals including swine suggests the 1918 outbreak in humans followed a reassortment event within a mammal, the exact origin of the 1918 strain remains elusive. It is estimated that anywhere from 50 to 100 million people
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either from swine to humans, or from humans to swine. Although it is not certain in which direction the virus was transferred, some evidence suggests that in this case pigs caught the disease from humans. For instance, swine influenza was only noted as a new disease of pigs in 1918 after the first
888:
In the aftermath of the 2009 pandemic, several studies were conducted to see which population groups were most likely to have received an influenza vaccine. These studies demonstrated that caucasians are much more likely to be vaccinated for seasonal influenza and for the H1N1 strain than African
171:
Around the mid-20th century, the identification of influenza subtypes was made possible, allowing accurate diagnosis of transmission to humans. Since then, only 50 such transmissions have been confirmed. These strains of swine flu rarely pass from human to human. Symptoms of zoonotic swine flu in
1153:
In 1998, swine flu was found in pigs in four U.S. states. Within a year, it had spread through pig populations across the United States. Scientists found this virus had originated in pigs as a recombinant form of flu strains from birds and humans. This outbreak confirmed that pigs can serve as a
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Facility management includes using disinfectants and ambient temperature to control viruses in the environment. They are unlikely to survive outside living cells for more than two weeks, except in cold (but above freezing) conditions, and are readily inactivated by disinfectants. Herd management
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has resulted in inconsistent responses to traditional vaccines. Standard commercial swine flu vaccines are effective in controlling the infection when the virus strains match enough to have significant cross-protection, and custom (autogenous) vaccines made from the specific viruses isolated are
722:
Prevention of swine influenza has three components: prevention in pigs, prevention of transmission to humans, and prevention of its spread among humans. Proper handwashing techniques can prevent the virus from spreading. Individuals can prevent infection by not touching the eyes, nose, or mouth,
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Overall, there were 1098 cases of GBS recorded nationwide by CDC surveillance, 532 of which occurred after vaccination and 543 before vaccination. About one to two cases per 100,000 people of GBS occur every year, whether or not people have been vaccinated. The vaccination program seems to have
915:
As swine influenza is rarely fatal to pigs, little treatment beyond rest and supportive care is required. Instead, veterinary efforts are focused on preventing the spread of the virus throughout the farm or to other farms. Vaccination and animal management techniques are most important in these
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can be another infection control tactic. Individuals should avoid other people who might be infected or if infected themselves isolate from others for the duration of the infection. During active outbreaks, avoiding large gatherings, increasing physical distance in public places, or if possible
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Recompensation charges were filed for over 4,000 cases of severe vaccination damage, including 25 deaths, totaling US$ 3.5 billion, by 1979. The CDC stated most studies on modern influenza vaccines have seen no link with GBS, Although one review gives an incidence of about one case per million
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may also increase the risk of transmission, as the pigs are raised in very close proximity to each other. Direct transfer of the virus probably occurs though pigs touching noses or through dried mucus. Airborne transmission through the aerosols produced by pigs coughing or sneezing are also an
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such as the eyes, nose, or mouth during the 2009 H1N1 pandemic, as these are common entry points for flu viruses. Swine flu cannot be spread by pork products, since the virus is not transmitted through food. The swine flu in humans is most contagious during the first five days of the illness,
806:
when dealing with infected animals. The use of vaccines on swine to prevent their infection is a major method of limiting swine-to-human transmission. Risk factors that may contribute to the swine-to-human transmission include smoking and, especially, not wearing gloves when working with sick
801:
The transmission from swine to humans is believed to occur mainly in swine farms, where farmers are in close contact with live pigs. Although strains of swine influenza are usually not able to infect humans, it may occasionally happen, so farmers and veterinarians are encouraged to use face
949:(Relenza) for the treatment and/or prevention of infection with swine influenza viruses; however, the majority of people infected with the virus make a full recovery without requiring medical attention or antiviral drugs. The virus isolated in the 2009 outbreak have been found resistant to
1255:. As of 22 April 2015 the Nepal Ministry of Health reported that 2,498 people had been treated in Jajarkot, of whom 552 were believed to have swine flu, and acknowledged that the government's response had been inadequate. The Jajarkot outbreak had just been declared an emergency when the
1203:
Swine flu outbreaks were reported in India in late 2014 and early 2015. As of March 19, 2015 the disease has affected 31,151 people and claimed over 1,841 lives. The largest number of reported cases and deaths due to the disease occurred in the western part of India including states like
1131:, covering close to 100 million doses of H1N1 flu vaccine, found only 11 cases of GBS, which is lower than the normal rate of the disease in China: "The risk-benefit ratio, which is what vaccines and everything in medicine is about, is overwhelmingly in favor of vaccination."
1226:
There was another outbreak in India in 2017. The states of Maharashtra and Gujarat were the worst affected. Gujarat high court has given Gujarat government instructions to control deaths by swine flu. 1,090 people died of swine flu in India in 2019 until August 31, 2019.
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in humans, usually with limited distribution, rarely with a widespread distribution. Outbreaks in swine are common and cause significant economic losses in industry, primarily by causing stunting and extended time to market. For example, this disease costs the British
1144:. Barbara died eight days later, after developing pneumonia. The only pathogen identified was an H1N1 strain of swine influenza virus. Doctors were able to induce labor and deliver a healthy daughter before she died. Her husband recovered from his symptoms.
1333:) stated that "G4 EA H1N1 viruses possess all the essential hallmarks of being highly adapted to infect humans ... Controlling the prevailing G4 EA H1N1 viruses in pigs and close monitoring of swine working populations should be promptly implemented."
4679:
Wells DL, Hopfensperger DJ, Arden NH, Harmon MW, Davis JP, Tipple MA, Schonberger LB (1991). "Swine influenza virus infections. Transmission from ill pigs to humans at a Wisconsin agricultural fair and subsequent probable person-to-person transmission".
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crucible where novel influenza viruses emerge as a result of the reassortment of genes from different strains. Genetic components of these 1998 triple-hybrid strains would later form six out of the eight viral gene segments in the 2009 flu outbreak.
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Schonberger LB, Bregman DJ, Sullivan-Bolyai JZ, Keenlyside RA, Ziegler DW, Retailliau HF, et al. (August 1979). "Guillain-Barre syndrome following vaccination in the National Influenza Immunization Program, United States, 1976--1977".
843:
Influenza can spread in coughs or sneezes, but an increasing body of evidence shows small droplets containing the virus can linger on tabletops, telephones, and other surfaces and be transferred via the fingers to the eyes, nose, or mouth.
316:
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Pigs are unusual because they can be infected with influenza strains that usually infect three different species: pigs, birds, and humans. Within pigs, influenza viruses may exchange genes and produce novel strains. Avian influenza virus
1049:
The swine flu was initially seen in the US in April 2009, where the strain of the particular virus was a mixture from 3 types of strains. Six of the genes are very similar to the H1N2 influenza virus that was found in pigs around 2000.
1139:
In September 1988, a swine flu virus killed one woman and infected others. A 32-year-old woman, Barbara Ann Wieners, was eight months pregnant when she and her husband, Ed, became ill after visiting the hog barn at a county fair in
317:
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who have either been in contact with persons with confirmed swine flu, or who were in one of the five U.S. states that have reported swine flu cases or in Mexico during the seven days preceding their illness onset." A diagnosis of
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as the method of choice for diagnosing H1N1. The oral or nasal fluid collection and RNA virus-preserving filter-paper card is commercially available. This method allows a specific diagnosis of novel influenza (H1N1) as opposed to
310:, and two were known to be previously healthy. No medical history was reported for the remaining case The true rate of infection may be higher, as most cases only cause a very mild disease and may never be reported or diagnosed.
681:(PB2 and PA) lineages. In August 2012, the Center for Disease Control and Prevention confirmed 145 human cases (113 in Indiana, 30 in Ohio, one in Hawaii and one in Illinois) of H3N2v since July 2012. The death of a 61-year-old
901:
Although there is no formal national surveillance system in the United States to determine what viruses are circulating in pigs, an informal surveillance network in the United States is part of a world surveillance network.
669:, the H1N1 subtype was exclusively prevalent among swine populations before 1998. Since late August 1998, H3N2 subtypes have been isolated from pigs. As of 2004, H3N2 virus isolates in US swine and turkey stocks were triple
893:. Additionally, vaccines are typically administered in clinics, hospitals, or doctor's offices. Many people of lower socioeconomic status are less likely to receive vaccinations because they do not have health insurance.
522:, where avian flu had broken out, five of the pig samples contained the H5N1 virus. The Indonesian government found similar results in the same region, though additional tests of 150 pigs outside the area were negative.
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and crippled young people." In total, 48,161,019 Americans, or just over 22% of the population, had been immunized by the time the National Influenza Immunization Program was effectively halted on December 16, 1976.
937:
supportive care at home or in a hospital focuses on controlling fevers, relieving pain and maintaining fluid balance, as well as identifying and treating any secondary infections or other medical problems. The U.S.
848:
work well to destroy viruses and bacteria. Anyone with flu-like symptoms, such as a sudden fever, cough, or muscle aches, should stay away from work or public transportation and should contact a doctor for advice.
815:
Influenza spreads between humans when infected people cough or sneeze, then other people breathe in the virus or touch something with the virus on it and then touch their own face. The CDC warned against touching
159:
The swine influenza virus is common throughout pig populations worldwide. Transmission of the virus from pigs to humans is rare and does not always lead to human illness, often resulting only in the production of
1375:) say the virus should be monitored, particularly among those in close contact with pigs, but it is not an immediate threat. There are no reported cases or evidence of the virus outside of China as of July 2020.
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318:
223:. There were 18,449 confirmed fatalities. However, in a 2012 study, the CDC estimated more than 284,000 possible fatalities worldwide, with numbers ranging from 150,000 to 575,000. In August 2010, the
2133:
Vicente J, León-Vizcaíno L, Gortázar C, José Cubero M, González M, Martín-Atance P (July 2002). "Antibodies to selected viral and bacterial pathogens in European wild boars from southcentral Spain".
302:
swine flu). Fifty cases are known to have occurred since the first report in medical literature in 1958, which have resulted in a total of six deaths. Of these six people, one was pregnant, one had
1093:, which spread simultaneously, also caused illness, and persisted until March. Alarmed public health officials decided action must be taken to head off another major pandemic, and urged President
1089:
This new strain appeared to be closely related to the strain involved in the 1918 flu pandemic. Moreover, the ensuing increased surveillance uncovered another strain in circulation in the U.S.:
1223:
Researchers of MIT have claimed that the swine flu has mutated in India to a more virulent version with changes in Hemagglutinin protein, contradicting earlier research by Indian researchers.
4933:
828:
Thermal imaging camera and screen, photographed in an airport terminal in Greece – thermal imaging can detect elevated body temperature, one of the signs of the virus H1N1 (swine influenza).
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Kaplan JE, Katona P, Hurwitz ES, Schonberger LB (August 1982). "Guillain-Barré syndrome in the United States, 1979-1980 and 1980-1981. Lack of an association with influenza vaccination".
840:, especially after being out in public. Chance of transmission is also reduced by disinfecting household surfaces, which can be done effectively with a diluted chlorine bleach solution.
550:
is roughly spherical. It is an enveloped virus; the outer layer is a lipid membrane which is taken from the host cell in which the virus multiplies. Inserted into the lipid membrane are
821:
although some people, most commonly children, can remain contagious for up to ten days. Diagnosis can be made by sending a specimen, collected during the first five days, for analysis.
453:
important means of infection. The virus usually spreads quickly through a herd, infecting all the pigs within just a few days. Transmission may also occur through wild animals, such as
3584:"European surveillance network for influenza in pigs: surveillance programs, diagnostic tools and Swine influenza virus subtypes identified in 14 European countries from 2010 to 2013"
4300:
Retailliau HF, Curtis AC, Storr G, Caesar G, Eddins DL, Hattwick MA (March 1980). "Illness after influenza vaccination reported through a nationwide surveillance system, 1976-1977".
2617:
Influenza B and C viruses are almost exclusively isolated from man, although influenza C virus has also been isolated from pigs and influenza B has recently been isolated from seals.
745:)). Because much of the illness and death associated with swine flu involves secondary infection by other pathogens, control strategies that rely on vaccination may be insufficient.
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6090:
5415:
322:
In this video, Dr. Joe Bresee, with CDC's Influenza Division, describes the symptoms of swine flu and warning signs to look for that indicate the need for urgent medical attention.
3938:
Kay RM, Done SH, Paton DJ (August 1994). "Effect of sequential porcine reproductive and respiratory syndrome and swine influenza on the growth and performance of finishing pigs".
562:(NA). The combination of HA and NA proteins determine the subtype of influenza virus (A/H1N1, for example). HA and NA are important in the immune response against the virus, and
219:, 11–21% of the then global population (of about 6.8 billion), equivalent to around 700 million to 1.4 billion people, contracted the illness—more, in absolute terms, than the
315:
448:
The main route of transmission is through direct contact between infected and uninfected animals. These close contacts are particularly common during animal transport.
445:
Influenza is common in pigs. About half of breeding pigs in the USA have been exposed to the virus. Antibodies to the virus are also common in pigs in other countries.
3044:"CDC H1N1 Flu | Interim Guidance on Specimen Collection, Processing, and Testing for Patients with Suspected Novel Influenza A (H1N1) (Swine Flu) Virus Infection"
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1235:
Swine flu outbreaks were reported in Nepal in the spring of 2015. Up to April 21, 2015, the disease had claimed 26 lives in the most severely affected district,
4843:
4821:
4799:
1937:"CDC Health Update: Swine Influenza A (H1N1) Update: New Interim Recommendations and Guidance for Health Directors about Strategic National Stockpile Materiel"
2678:
Kimura H, Abiko C, Peng G, Muraki Y, Sugawara K, Hongo S, et al. (April 1997). "Interspecies transmission of influenza C virus between humans and pigs".
5067:
4763:
383:
swine flu requires not only symptoms, but also a high likelihood of swine flu due to the person's recent and past medical history. For example, during the
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5394:
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woman is the first in the USA associated with a new swine flu strain. She contracted the illness after having contact with hogs at the Ross County Fair.
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and other responsible authorities have action plans which may request or require social distancing actions, depending on the severity of the outbreak.
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the study "in an exaggerated and nonfactual way" and that the number of pigs sampled was too small to demonstrate G4 had become the dominant strain.
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1598:
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efforts. Antibiotics are also used to treat the disease, which, although they have no effect against the influenza virus, do help prevent bacterial
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has not been reported in pigs. Within influenza A and influenza C, the strains found in pigs and humans are largely distinct, although because of
5043:
1325:
5729:
3556:
2468:
5019:
1409:
5744:
2428:"Genetic analysis of human H2N2 and early H3N2 influenza viruses, 1957-1972: evidence for genetic divergence and multiple reassortment events"
5230:
384:
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4557:
3909:
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1962:
1413:
938:
329:
1528:
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4781:
2718:"Antigenic and genetic characterization of influenza C viruses which caused two outbreaks in Yamagata City, Japan, in 1996 and 1998"
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As of March 16, 2017, over a hundred confirmed cases of swine flu and at least six deaths were reported in the Maldivian capital of
1389:
982:
from human, swine and avian viruses, have become a major cause of swine influenza in North America. Reassortment between H1N1 and
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991:
82:
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6702:
6651:
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1457:
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274:. However, infected pigs may not exhibit any symptoms. Although mortality is usually low (around 1–4%), the virus can cause
5748:
5178:
4520:"Safety of trivalent inactivated influenza vaccines in adults: background for pandemic influenza vaccine safety monitoring"
723:
distancing from others who display symptoms of the cold or flu, and avoiding contact with others when displaying symptoms.
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3064:
1319:
4 (G4) Eurasian avian-like (EA) H1N1 virus that mainly affects pigs, but there is some evidence of it infecting people. A
6187:
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1580:
1174:. On July 27, 2007, the Philippine National Meat Inspection Service (NMIS) raised a hog cholera "red alert" warning over
731:
Methods of preventing the spread of influenza among swine include facility management, herd management, and vaccination (
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3413:
2514:
2037:"The potential role of concentrated animal feeding operations in infectious disease epidemics and antibiotic resistance"
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2813:
1341:
5300:"Prevalent Eurasian avian-like H1N1 swine influenza virus with 2009 pandemic viral genes facilitating human infection"
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6390:
6385:
6192:
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2492:
665:. In pigs, four influenza A virus subtypes (H1N1, H1N2, H3N2 and H7N9) are the most common strains worldwide. In the
388:
5122:
1706:"Swine influenza virus: zoonotic potential and vaccination strategies for the control of avian and swine influenzas"
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6453:
2896:"Isolation and characterization of novel H3N1 swine influenza viruses from pigs with respiratory diseases in Korea"
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animals, thereby increasing the likelihood of subsequent hand-to-eye, hand-to-nose, or hand-to-mouth transmission.
387:, the CDC advised physicians to "consider swine influenza infection in the differential diagnosis of patients with
1300:
to the Maldives during his Asian tour was also cancelled last minute amidst fears over the outbreak of swine flu.
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6085:
6080:
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2191:"Facing pandemic influenza threats: the importance of including poultry and swine workers in preparedness plans"
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3995:
Vana G, Westover KM (June 2008). "Origin of the 1918 Spanish influenza virus: a comparative genomic analysis".
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struck on 25 April 2015, diverting all medical and emergency resources to quake-related rescue and recovery.
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in China and has been detected in pigs in Vietnam, increasing fears of the emergence of new variant strains.
469:
infection with influenza virus endemic in these animals, and constitute a population of human hosts in which
881:(FDA) approved the new swine flu vaccine for use in the United States on September 15, 2009. Studies by the
518:
These H5N1 infections may be common. In a survey of 10 apparently healthy pigs housed near poultry farms in
4582:
McKinney WP, Volkert P, Kaufman J (January 1990). "Fatal swine influenza pneumonia during late pregnancy".
3438:
890:
878:
5475:"Ecological aspects of influenza A viruses in animals and their relationship to human influenza: a review"
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4965:
3486:"Racial and ethnic disparities in uptake and location of vaccination for 2009-H1N1 and seasonal influenza"
3021:
794:
Swine can be infected by both avian and human flu strains of influenza, and therefore are hosts where the
465:
People who work with poultry and swine, especially those with intense exposures, are at increased risk of
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1365:
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Ginsberg M, Hopkins J, Maroufi A, Dunne G, Sunega DR, Giessick J, McVay P, et al. (22 April 2009).
1345:
1141:
2475:
2330:"Are swine workers in the United States at increased risk of infection with zoonotic influenza virus?"
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1170:, Philippines. The mortality rate is less than 10% for swine flu, unless there are complications like
628:
there have been transfers of genes among strains crossing swine, avian, and human species boundaries.
6682:
6625:
6240:
4991:
4335:
3560:
1337:
869:
224:
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770:. After an outbreak, as immunity in exposed pigs wanes, new outbreaks of the same strain can occur.
2328:
Myers KP, Olsen CW, Setterquist SF, Capuano AW, Donham KJ, Thacker EL, et al. (January 2006).
1554:
5789:
1121:
increased this normal risk of developing GBS by about to one extra case per 100,000 vaccinations.
578:
and preventing the release of viruses from host cells. Also embedded in the lipid membrane is the
19:
This article is about influenza viruses in pigs. For the 2009 outbreak originating in Mexico, see
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1767:
Rahman MT, Sobur MA, Islam MS, Ievy S, Hossain MJ, El Zowalaty ME, et al. (September 2020).
1162:
On August 20, 2007, Department of Agriculture officers investigated the outbreak of swine flu in
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20:
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show a single dose creates enough antibodies to protect against the virus within about 10 days.
637:
of genetic diversity in influenza C, this form of influenza does not cause pandemics in humans.
6641:
6443:
6245:
6213:
6148:
2765:
Lynch JP, Walsh EE (April 2007). "Influenza: evolving strategies in treatment and prevention".
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Matsuzaki Y, Sugawara K, Mizuta K, Tsuchiya E, Muraki Y, Hongo S, et al. (February 2002).
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1147:
492:
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swine flu requires laboratory testing of a respiratory sample (a simple nose and throat swab).
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177:
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swine flu. People with regular exposure to pigs are at increased risk of swine flu infections.
65:
24:
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surveillance program screened 338 swine production workers in China for exposure (presence of
748:
Control of swine influenza by vaccination has become more difficult in recent decades, as the
270:, eye redness or inflammation, and decreased appetite. In some cases, the infection can cause
6223:
5795:
5553:
Lipatov AS, Govorkova EA, Webby RJ, Ozaki H, Peiris M, Guan Y, et al. (September 2004).
5264:"CDC takes action to prepare against 'G4' swine flu viruses in China with pandemic potential"
4561:
3975:
3917:
3890:
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3535:"Swine influenza A (H1N1) infection in two children – Southern California, March–April 2009"
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Ma W, Vincent AL, Gramer MR, Brockwell CB, Lager KM, Janke BH, et al. (December 2007).
693:
6233:
5311:
4051:
4004:
3595:
2945:"Interspecies and intraspecies transmission of triple reassortant H3N2 influenza A viruses"
2848:
2549:
682:
220:
4907:
1555:"First Global Estimates of 2009 H1N1 Pandemic Mortality Released by CDC-Led Collaboration"
741:
8:
6293:
6177:
5894:
4785:
3534:
3203:"Serologic and genetic characterization of North American H3N2 swine influenza A viruses"
2495:. University of Minnesota: Center for Infectious Disease Research and Policy. 27 May 2005
1349:
1344:, stated in July 2020 that this strain of influenza virus was not new and had been under
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400:
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4055:
4008:
3780:
Olsen CW (May 2002). "The emergence of novel swine influenza viruses in North America".
3599:
2852:
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Gray GC, McCarthy T, Capuano AW, Setterquist SF, Olsen CW, Alavanja MC (December 2007).
6697:
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2085:
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1826:
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in humans was associated with H1N1 and influenza appearing in pigs; this may reflect a
833:
832:
Recommendations to prevent the spread of the virus among humans include using standard
707:
538:
5764:
Center for Infectious Disease Research and Policy – Novel H1N1 influenza resource list
5657:
5632:
5579:
5554:
4782:"Video Segments 3,4,5 in Flu Factories: Tracing the Origins of the Swine Flu Pandemic"
3793:
3095:"Micronics Acquires License to Biosearch Technologies' Nucleic Acid Assay Chemistries"
2742:
2717:
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1498:
290:
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5662:
5619:
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5533:
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5389:
5339:
4716:
4715:
Gangurde HH, Gulecha VS, Borkar VS, Mahajan MS, Khandare RA, Mundada AS (July 2011).
4697:
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998:
971:
852:
758:
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449:
361:
216:
205:
133:
77:
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5725:
Official swine flu advice and latest information from the UK National Health Service
5709:
5545:
5385:"Swine flu strain with human pandemic potential increasingly found in pigs in China"
4742:
4469:
3967:
2172:
994:
crossed the species barrier from birds to pigs, but was contained on a single farm.
6590:
6535:
6525:
6463:
6127:
5950:
5945:
5940:
5930:
5687:
5652:
5648:
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5609:
5598:"Avian and swine influenza viruses: our current understanding of the zoonotic risk"
5574:
5566:
5525:
5494:
5486:
5329:
5319:
4728:
4689:
4630:
4591:
4531:
4492:
4449:
4420:"Swine Flu 1976 | Swine flu 'debacle' of 1976 is recalled – Los Angeles Times"
4374:
4309:
4200:
4192:
4148:
4138:
4081:
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4012:
3947:
3862:
3854:
3789:
3741:
3706:
3664:
3654:
3613:
3603:
3582:
Simon G, Larsen LE, Dürrwald R, Foni E, Harder T, Van Reeth K, et al. (2014).
3505:
3497:
3277:
3269:
3256:
Ramirez A, Capuano AW, Wellman DA, Lesher KA, Setterquist SF, Gray GC (June 2006).
3214:
3115:
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2915:
2907:
2866:
2856:
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2150:
2142:
2105:
2097:
2056:
2048:
2035:
Gilchrist MJ, Greko C, Wallinga DB, Beran GW, Riley DG, Thorne PS (February 2007).
1846:
1838:
1790:
1780:
1717:
1653:
1494:
1312:
1268:
997:
The H1N1 form of swine flu is one of the descendants of the strain that caused the
970:
Swine influenza was first proposed to be a disease related to human flu during the
621:
617:
613:
360:, sneezing, runny nose, coughing, dizziness, abdominal pain, lack of appetite, and
129:
117:
5358:"Recently publicized swine flu not new, under surveillance since 2011: WHO expert"
4535:
3187:
2733:
2646:
2379:"Genetic evolution of swine influenza A (H3N2) viruses in China from 1970 to 2006"
2247:
1785:
1658:
1641:
6563:
5179:"Swine flu spreads across Punjab, 3 more patients identified in Multan, Pakistan"
4339:
3643:"Influenza A Virus in Swine: Epidemiology, Challenges and Vaccination Strategies"
3608:
2562:
817:
795:
678:
508:
4258:
4016:
2444:
2427:
1983:
856:
remaining at home as much as is feasible can prevent further spread of disease.
332:(CDC), in humans the symptoms of the 2009 "swine flu" H1N1 virus are similar to
6302:
5909:
5490:
5304:
Proceedings of the National Academy of Sciences of the United States of America
4595:
2894:
Shin JY, Song MS, Lee EH, Lee YM, Kim SY, Kim HK, et al. (November 2006).
2841:
Proceedings of the National Academy of Sciences of the United States of America
2232:"Pandemic influenza planning: shouldn't swine and poultry workers be included?"
2146:
1900:
1584:
1248:
1220:
1209:
845:
837:
824:
583:
279:
5692:
5675:
3309:"Q & A: Key facts about swine influenza (swine flu) – Spread of Swine Flu"
2538:"Designing inhibitors of M2 proton channel against H1N1 swine influenza virus"
2517:. University of Minnesota: Center for Infectious Disease Research & Policy
1936:
1874:
6666:
6595:
6458:
5614:
5597:
4658:
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3552:
3501:
3417:
3371:
3350:
3308:
2608:
1745:
1506:
1372:
1357:
1113:
1010:
857:
803:
702:
666:
575:
559:
555:
424:
5827:
5754:
Worried about swine flu? Then you should be terrified about the regular flu.
5324:
4733:
4518:
Vellozzi C, Burwen DR, Dobardzic A, Ball R, Walton K, Haber P (March 2009).
4143:
2961:
2861:
2837:"Identification of H2N3 influenza A viruses from swine in the United States"
1178:
and five regions of Luzon after the disease spread to backyard pig farms in
6605:
6228:
5904:
5701:
5623:
5588:
5537:
5446:
5343:
5100:
4693:
4543:
4461:
4363:
4268:
4214:
4196:
4162:
4073:
4024:
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3763:
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3627:
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2070:
1912:
1860:
1804:
1731:
1667:
1175:
979:
736:
670:
625:
551:
474:
62:
5666:
5508:
5068:"Swine flu kills over 1,000 Indians in 2017, worst outbreak since 2009-10"
4701:
4644:
4603:
4504:
4321:
4108:
3959:
2778:
2699:
2207:
2190:
1958:
1934:
1408:
298:
Direct transmission of a swine flu virus from pigs to humans is possible (
68:
photographed at the CDC Influenza Laboratory. The viruses are 80–120
6610:
6337:
6332:
6320:
6122:
5130:
4386:
4127:"From where did the 2009 'swine-origin' influenza A virus (H1N1) emerge?"
3951:
2911:
2394:
1320:
1296:
pregnant women was initiated thereafter. An official visit by Saudi King
1171:
1163:
1101:
1094:
1082:
954:
942:
593:
412:
364:. During the 2009 outbreak, an elevated percentage of patients reporting
349:
275:
271:
189:
4336:"Historical National Population Estimates: July 1, 1900 to July 1, 1999"
4064:
4039:
566:
against these spikes may protect against infection. The antiviral drugs
6568:
6486:
6362:
6315:
6310:
5914:
5231:"Woman dies in second H1N1 fatality as cases rise above 100 – Maldives"
2132:
1311:, also known as the G4 swine flu virus (G4) is a swine influenza virus
1308:
1280:
1279:, in January 2017. Cases of swine flu were also reported in Lahore and
950:
836:, which includes frequent washing of hands with soap and water or with
787:
767:
589:
586:
5416:"China says G4 swine flu virus not new; does not infect humans easily"
2155:
50:
6620:
6615:
6395:
6354:
6347:
6342:
5870:
5631:
Webster RG, Bean WJ, Gorman OT, Chambers TM, Kawaoka Y (March 1992).
5298:
Sun H, Xiao Y, Liu J, Wang D, Li F, Wang C, et al. (July 2020).
4938:
4635:
4618:
3329:
2052:
1240:
1213:
1031:
946:
917:
749:
674:
609:
519:
454:
404:
333:
173:
94:
69:
5810:
4519:
3351:"Q & A: Key facts about swine influenza (swine flu) – Diagnosis"
2377:
Yu H, Hua RH, Zhang Q, Liu TQ, Liu HL, Li GX, Tong GZ (March 2008).
2024:. Center for Food Security and Public Health, Iowa State University.
5516:
Hampson AW, Mackenzie JS (November 2006). "The influenza viruses".
5205:"Makeshift flu clinics swamped as H1N1 cases rise to 82 – Maldives"
4851:
4829:
4807:
4764:"CDC Confirms Ties to Virus First Discovered in U.S. Pig Factories"
3745:
2345:
1842:
1722:
1705:
1361:
1316:
1272:
1236:
1183:
1070:
1026:
1005:
697:
Thermal scanning of passengers arriving at Singapore Changi airport
563:
470:
466:
416:
369:
365:
353:
303:
299:
263:
259:
255:
228:
197:
165:
164:
in the blood. If transmission causes human illness, it is called a
161:
121:
2493:"Indonesian pigs have avian flu virus; bird cases double in China"
1074:
from January 19 to February 9 and did not spread beyond Fort Dix.
6530:
5733:
4836:
4408:. Centers for Disease Control and Prevention. September 14, 2009.
1252:
1239:
in Northwest Nepal. Cases were also detected in the districts of
1217:
1179:
874:
571:
567:
267:
209:
193:
5758:
5020:"Maharashtra and Gujarat See Highest Number of Swine Flu Deaths"
4619:"Fatal case of swine influenza virus in an immunocompetent host"
3738:
The Threat of Pandemic Influenza: Are We Ready? Workshop Summary
3640:
1827:"Cases of swine influenza in humans: a review of the literature"
1682:"Key Facts about Swine Influenza (Swine Flu) in Pigs | CDC"
1292:
427:. Fatalities are more likely in young children and the elderly.
6400:
5822:
5768:
5676:"Influenza in animals: its possible public health significance"
5442:"4 reasons not to worry about that 'new' swine flu in the news"
2715:
2086:"Confined animal feeding operations as amplifiers of influenza"
1276:
1244:
1030:
large outbreaks of influenza amongst people. Although a recent
978:
strains emerged. These strains, which include genes derived by
732:
605:
547:
408:
357:
181:
4482:
3740:. Washington, D.C.: The National Academies Press. p. 75.
3732:
Institute of Medicine (US) Forum on Microbial Threats (2005).
2278:
6600:
4678:
4439:
3693:"WHO | Pandemic (H1N1) 2009: Frequently asked questions"
3431:
1935:
Centers for Disease Control and Prevention (April 27, 2009).
1205:
1167:
1097:
that every person in the U.S. be vaccinated for the disease.
753:
530:
345:
341:
251:
235:
201:
185:
97:
5839:
5759:
Centers for Disease Control and Prevention (CDC) – Swine Flu
5123:"Lab Test on three samples from Jajarkot confirms swine flu"
5044:"Control swine flu deaths: Gujarat high court to government"
4714:
2327:
5730:
8 minute video answering common questions about the subject
4558:"Last Year's (2009) H1N1 Flu Vaccine Was Safe, Study Finds"
4517:
4299:
4260:
The Swine Flu Affair: Decision-Making on a Slippery Disease
3532:
3353:. Centers for Disease Control and Prevention. 24 April 2009
3322:
3311:. Centers for Disease Control and Prevention. 24 April 2009
3255:
2943:
Yassine HM, Al-Natour MQ, Lee CW, Saif YM (November 2007).
2034:
1090:
987:
983:
975:
662:
658:
654:
650:
646:
512:
504:
500:
488:
153:
149:
145:
141:
137:
5773:
5741:
Numeric analysis and approximation of current active cases
5552:
4406:"General Questions and Answers on Guillain–Barré syndrome"
3201:
Gramer MR, Lee JH, Choi YK, Goyal SM, Joo HS (July 2007).
5630:
4179:
Gaydos JC, Top FH, Hodder RA, Russell PK (January 2006).
3641:
Mancera Gracia JC, Pearce DS, Masic A, Balasch M (2020).
2466:
1639:
877:
are available for different kinds of swine flu. The U.S.
496:
125:
4181:"Swine influenza a outbreak, Fort Dix, New Jersey, 1976"
3483:
3406:
2834:
1186:, even if they tested negative for the swine flu virus.
375:
Because these symptoms are not specific to swine flu, a
93:
is an infection caused by any of several types of swine
4040:"Molecular virology: was the 1918 flu avian in origin?"
3581:
2942:
1348:
since 2011. Almost 30,000 swine had been monitored via
4844:"The Humane Society of the United States Video Portal"
4822:"The Humane Society of the United States Video Portal"
4800:"The Humane Society of the United States Video Portal"
4581:
4178:
3891:"U.S. pork groups urge hog farmers to reduce flu risk"
1529:"CDC estimate of global H1N1 pandemic deaths: 284,000"
1414:"The Universal Virus Database, version 4: Influenza A"
1125:
vaccinations, a large study in China, reported in the
757:
created and used in the more difficult cases. Present
481:
5724:
4866:"DA probes reported swine flu 'outbreak' in N. Ecija"
3557:"Animals: The world's best (and cheapest) biosensors"
3439:"FDA Approves Vaccines for 2009 H1N1 Influenza Virus"
3141:"Pig | Description, Breeds, & Facts | Britannica"
2677:
1069:
On February 5, 1976, a United States army recruit at
16:
Infection caused by influenza viruses endemic to pigs
5800:
4717:"Swine Influenza A (H1N1 Virus): A pandemic disease"
4124:
2281:"Swine workers and swine influenza virus infections"
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1485:
Chandra S, Bisht N (2010-03-01). "Swine Influenza".
5395:
American Association for the Advancement of Science
4125:Gibbs AJ, Armstrong JS, Downie JC (November 2009).
4037:
3736:. In Knobler S, Mack A, Mahmoud A, Lemon S (eds.).
3116:"Prevent the Spread of Flu Between Pigs and People"
2536:Du QS, Huang RB, Wang SQ, Chou KC (February 2010).
1898:
324:See also: See this video with subtitles on YouTube
4616:
4263:. Washington (DC): National Academies Press (US).
4230:"Ford Urges Flu Campaign To Inoculate Entire U.S."
3840:
3200:
2767:Seminars in Respiratory and Critical Care Medicine
2425:
1769:"Zoonotic Diseases: Etiology, Impact, and Control"
1640:Kothalawala H, Toussaint MJ, Gruys E (June 2006).
645:Swine influenza is caused by influenza A subtypes
411:), high fever (leading to neurological problems),
3484:Uscher-Pines L, Maurer J, Harris KM (July 2011).
3393:"Chlorine Bleach: Helping to Manage the Flu Risk"
3018:"1st Death Linked to New Swine Flu is Ohioan, 61"
2515:"H5N1 virus may be adapting to pigs in Indonesia"
2083:
6664:
5774:World Health Organization (WHO): Swine influenza
5515:
5006:"Silver lining: No mutation of H1N1, says study"
4792:
4256:
3395:. Water Quality & Health Council. April 2009
1004:Swine flu has been reported numerous times as a
352:, watery eyes, body aches, shortness of breath,
4814:
3775:
3773:
3258:"Preventing zoonotic influenza virus infection"
2535:
2426:Lindstrom SE, Cox NJ, Klimov A (October 2004).
2229:
2184:
2182:
1907:. Treasure Island (FL): StatPearls Publishing.
1820:
1818:
1816:
1814:
1699:
1697:
1695:
1693:
1691:
1452:. CreateSpace Independent Publishing Platform.
1326:Proceedings of the National Academy of Sciences
234:Subsequent cases of swine flu were reported in
5633:"Evolution and ecology of influenza A viruses"
5297:
4560:. Wunderground.com. 2011-02-02. Archived from
4174:
4172:
4038:Antonovics J, Hood ME, Baker CH (April 2006).
3452:
2893:
1824:
1410:International Committee on Taxonomy of Viruses
1303:
677:(HA, NA, and PB1), swine (NS, NP, and M), and
457:, which can spread the disease between farms.
250:In pigs, a swine influenza infection produces
5855:
5376:
4992:"The Swine Flu Virus Has Mutated Dangerously"
4094:
4050:(7088): E9, discussion E9-E9, discussion 10.
3980:: CS1 maint: DOI inactive as of March 2024 (
3843:"1918 Influenza: the mother of all pandemics"
2628:
2467:World Health Organization (28 October 2005).
2376:
1930:
1928:
1746:"Key Facts about Swine Influenza (Swine Flu)"
1635:
1633:
1631:
1629:
1627:
1625:
1623:
798:can occur that create new influenza strains.
511:. In August 2004, researchers in China found
128:. As of 2009, identified SIV strains include
5779:Medical Encyclopedia Medline Plus: Swine Flu
5408:
4908:"New mothers urged to get swine flu vaccine"
4617:Kimura K, Adlakha A, Simon PM (March 1998).
3994:
3988:
3937:
3770:
3477:
3303:
3301:
2711:
2709:
2272:
2179:
1984:"Swine flu can damage kidneys, doctors find"
1959:"Study: Swine flu resembles feared 1918 flu"
1811:
1748:. Centers for Disease Control and Prevention
1703:
1688:
1484:
1315:discovered in China. The virus is a variant
385:2009 swine flu outbreak in the United States
5293:
5291:
5289:
5287:
5285:
5258:
5256:
5254:
5252:
4887:"Gov't declares hog cholera alert in Luzon"
4672:
4610:
4575:
4169:
3841:Taubenberger JK, Morens DM (January 2006).
3836:
3834:
3832:
3830:
2512:
740:
240:31,156 positive test cases and 1,841 deaths
5862:
5848:
5435:
5433:
5350:
5268:Centers for Disease Control and Prevention
3901:
3727:
3725:
3723:
3526:
3120:Centers for Disease Control and Prevention
2764:
2188:
1925:
1825:Myers KP, Olsen CW, Gray GC (April 2007).
1620:
1267:Seven cases of swine flu were reported in
939:Centers for Disease Control and Prevention
330:Centers for Disease Control and Prevention
49:
44:Pig influenza, swine flu, hog flu, pig flu
5691:
5656:
5613:
5595:
5578:
5498:
5472:
5333:
5323:
4774:
4732:
4634:
4400:
4398:
4396:
4204:
4152:
4142:
4063:
3866:
3668:
3658:
3617:
3607:
3509:
3298:
3281:
3218:
3168:. National Hog Farmer. 15 September 2007.
2970:
2960:
2919:
2870:
2860:
2741:
2706:
2654:
2571:
2561:
2443:
2402:
2353:
2304:
2255:
2230:Gray GC, Trampel DW, Roth JA (May 2007).
2206:
2154:
2109:
2060:
1899:Jilani TN, Jamil RT, Siddiqui AH (2022).
1850:
1794:
1784:
1721:
1657:
846:Alcohol-based gel or foam hand sanitizers
811:Prevention of human-to-human transmission
612:, two also cause influenza in pigs, with
5479:Journal of the Royal Society of Medicine
5439:
5360:. Xinhuanet. 2 July 2020. Archived from
5282:
5249:
5093:"One more dies of swine flu in Jajarkot"
4756:
3827:
2460:
2013:
2011:
2009:
2007:
2005:
1390:Risk assessment for organic swine health
1336:Michael Ryan, executive director of the
1189:
1076:
823:
786:
692:
537:
529:
312:
289:
5792:EU coordination on Pandemic (H1N1) 2009
5673:
5430:
4275:
4227:
4120:
4118:
3720:
3207:Canadian Journal of Veterinary Research
3065:"RNASound (TM) RNA Sampling Cards (25)"
2808:
2806:
2804:
2629:Bouvier NM, Palese P (September 2008).
2622:
2084:Saenz RA, Hethcote HW, Gray GC (2006).
1439:
1437:
1435:
1433:
1431:
1429:
1427:
783:Prevention of pig-to-human transmission
6665:
5153:"Swine flu outbreak kills 24 in Nepal"
4393:
3907:
3814:
3330:"CDC H1N1 Flu | H1N1 Flu and You"
3243:"Swine flu: The predictable pandemic?"
2594:
1976:
1198:
6652:US influenza statistics by flu season
5843:
5382:
4934:"Swine flu toll inches towards 1,900"
3997:Molecular Phylogenetics and Evolution
3808:
3779:
3707:"Antiviral Drugs and Swine Influenza"
3539:Morbidity and Mortality Weekly Report
3372:"Swine Influenza (Flu) Investigation"
2995:"CDC confirms 145 cases of swine flu"
2758:
2002:
1443:
245:
5749:World Organisation for Animal Health
4925:
4115:
3551:
2801:
1704:Thacker E, Janke B (February 2008).
1424:
294:Main symptoms of swine flu in humans
5790:European Commission – Public Health
4966:"Swine Flu Claims Over 1,700 Lives"
4931:
4283:"The Last Great Swine Flu Epidemic"
4097:Bulletin of the History of Medicine
1157:
542:Main symptoms of swine flu in swine
482:Interaction with avian H5N1 in pigs
258:, discharge from the nose or eyes,
13:
6647:2017–2018 United States flu season
5555:"Influenza: emergence and control"
5530:10.5694/j.1326-5377.2006.tb00705.x
5465:
4422:. Articles.latimes.com. 2009-04-27
4379:10.1093/oxfordjournals.aje.a112795
4314:10.1093/oxfordjournals.aje.a112896
3460:"NIH studies on Swine flu vaccine"
2631:"The biology of influenza viruses"
2513:Roos Robert, ed. (31 March 2009).
2090:Vector Borne and Zoonotic Diseases
1710:The Journal of Infectious Diseases
399:The most common cause of death is
14:
6714:
6386:Live attenuated influenza vaccine
5718:
4257:Neustadt RE, Fineberg HV (1978).
3490:American Journal of Public Health
3015:
2041:Environmental Health Perspectives
990:. In 1999 in Canada, a strain of
599:
389:acute febrile respiratory illness
5686:(4): 239–42, discussion 247–48.
5571:10.1128/JVI.78.17.8951-8959.2004
5518:The Medical Journal of Australia
5223:
5197:
5171:
5145:
5115:
5085:
5060:
5036:
5012:
4998:
4984:
4958:
4900:
4879:
4858:
4497:10.1001/jama.1982.03330060038030
4454:10.2165/00002018-200932040-00005
4367:American Journal of Epidemiology
4302:American Journal of Epidemiology
2900:Journal of Clinical Microbiology
2722:Journal of Clinical Microbiology
2469:"H5N1 avian influenza: timeline"
2383:Journal of Clinical Microbiology
2189:Gray GC, Kayali G (April 2009).
1642:"An overview of swine influenza"
1286:
1262:
1085:receives a swine flu vaccination
608:of influenza viruses that cause
23:. For the 2009 human virus, see
5769:Pandemic Flu US Government Site
5129:. 15 April 2015. Archived from
5099:. 21 April 2015. Archived from
4708:
4651:
4550:
4511:
4476:
4433:
4412:
4357:
4328:
4293:
4250:
4221:
4088:
4031:
3931:
3883:
3699:
3685:
3647:Frontiers in Veterinary Science
3634:
3575:
3545:
3385:
3364:
3343:
3249:
3235:
3194:
3172:
3166:"Swine flu virus turns endemic"
3158:
3133:
3108:
3097:. Biosearchtech.com. 2009-10-28
3087:
3057:
3036:
3009:
2987:
2936:
2887:
2828:
2824:College of Veterinary Medicine.
2671:
2595:Heinen PP (15 September 2003).
2588:
2529:
2506:
2485:
2419:
2370:
2321:
2223:
2126:
2077:
2028:
1965:from the original on 2009-07-15
1951:
1892:
1881:from the original on 2021-11-17
1867:
1760:
1738:
1603:National Health Portal of India
1128:New England Journal of Medicine
896:
440:
435:
328:According to the United States
172:humans are similar to those of
5745:"Swine Influenza" disease card
5649:10.1128/MMBR.56.1.152-179.1992
4721:Systematic Reviews in Pharmacy
3815:Boffey PM (5 September 1976).
1875:"Symptoms of H1N1 (Swine Flu)"
1674:
1591:
1573:
1547:
1521:
1478:
1402:
1013:about £65 million every year.
863:
640:
631:
116:) refers to any strain of the
1:
6444:Russian flu (1889–1890)
5869:
5473:Alexander DJ (October 1982).
4584:Archives of Internal Medicine
4536:10.1016/j.vaccine.2009.01.125
4228:Schmeck HM (March 25, 1976).
3910:"Swine influenza: a zoonosis"
3817:"Soft evidence and hard sell"
3794:10.1016/S0168-1702(02)00027-8
3709:. Centers for Disease Control
2734:10.1128/JCM.40.2.422-429.2002
2692:10.1016/S0168-1702(96)01427-X
2647:10.1016/j.vaccine.2008.07.039
2597:"Swine influenza: a zoonosis"
2248:10.1016/j.vaccine.2007.03.036
1786:10.3390/microorganisms8091405
1659:10.1080/01652176.2006.9695207
1499:10.1016/S0976-0016(12)60003-9
1230:
924:in influenza-weakened herds.
883:National Institutes of Health
838:alcohol-based hand sanitizers
717:
582:, which is the target of the
415:(from excessive vomiting and
215:It is estimated that, in the
6703:Vaccine-preventable diseases
5680:Journal of Wildlife Diseases
4185:Emerging Infectious Diseases
3914:Veterinary Sciences Tomorrow
3847:Emerging Infectious Diseases
3609:10.1371/journal.pone.0115815
3262:Emerging Infectious Diseases
2997:. FoxNews.com. 9 August 2012
2601:Veterinary Sciences Tomorrow
2563:10.1371/journal.pone.0009388
2334:Clinical Infectious Diseases
2285:Emerging Infectious Diseases
2135:Journal of Wildlife Diseases
1831:Clinical Infectious Diseases
1371:Health officials (including
1298:Salman bin Abdulaziz Al Saud
1134:
1058:
1053:
1038:
965:
905:
879:Food and Drug Administration
688:
525:
460:
403:. Other causes of death are
110:swine-origin influenza virus
7:
5674:Winkler WG (October 1970).
5440:de Jesus GE (2 July 2020).
4659:"Key Facts About Swine Flu"
4017:10.1016/j.ympev.2008.02.003
3734:"1: The Story of Influenza"
2526:report on pigs as carriers.
2445:10.1016/j.virol.2004.06.009
1450:The Merck Veterinary Manual
1378:
1366:human-to-human transmission
1304:2020 G4 EA H1N1 publication
1257:April 2015 Nepal earthquake
931:
773:
430:
208:, shortness of breath, and
118:influenza family of viruses
10:
6719:
6219:Transmission and infection
5491:10.1177/014107688207501010
4596:10.1001/archinte.150.1.213
3414:"Self protection measures"
3186:. Novartis. Archived from
2147:10.7589/0090-3558-38.3.649
1342:Health Emergencies Program
1142:Walworth County, Wisconsin
1062:
1042:
960:
910:
867:
18:
6634:
6581:
6556:
6518:
6511:
6499:Central Luzon H5N6 (2017)
6477:
6439:Influenza pandemic (1557)
6434:Influenza pandemic (1510)
6424:
6413:
6376:
6301:
6292:
6272:
6263:
6206:
6170:
6161:
6141:
6113:
6104:
5959:
5923:
5877:
5804:
5739:Swine flu charts and maps
5693:10.7589/0090-3558-6.4.239
4344:U.S. Bureau of the Census
1716:(Supplement 1): S19–S24.
1356:Between 2016 and 2018, a
1338:World Health Organization
870:2009 flu pandemic vaccine
616:being common in pigs and
534:Structure of H1N1 Virion.
285:
225:World Health Organization
76:
57:
48:
40:
35:
6541:2007 Australian outbreak
5786:EU response to influenza
5383:Cohen J (29 June 2020).
4848:videos.humanesociety.org
4826:videos.humanesociety.org
4804:videos.humanesociety.org
3660:10.3389/fvets.2020.00647
3502:10.2105/AJPH.2011.300133
1646:The Veterinary Quarterly
1395:
1275:, mainly in the city of
726:
673:, containing genes from
574:target NA by inhibiting
6328:Neuraminidase inhibitor
5637:Microbiological Reviews
5325:10.1073/pnas.1921186117
5235:maldivesindependent.com
5209:maldivesindependent.com
4734:10.4103/0975-8453.86300
4623:Mayo Clinic Proceedings
4342:: Population Division,
4144:10.1186/1743-422X-6-207
3954:(inactive 2024-03-02).
2962:10.1186/1743-422X-4-129
2862:10.1073/pnas.0710286104
1877:. YouTube. 2009-04-28.
1110:Guillain–Barré syndrome
1065:1976 swine flu outbreak
1035:were killed worldwide.
1016:
227:declared the swine flu
21:2009 swine flu pandemic
6642:Influenza-like illness
6311:Adamantane derivatives
5615:10.1051/vetres:2006062
5418:. Reuters. 4 July 2020
4932:PTI (March 19, 2015).
4694:10.1001/jama.265.4.478
4197:10.3201/eid1201.050965
3916:: 1–11. Archived from
3859:10.3201/eid1201.050979
3541:. 58 (Dispatch) (1–3).
3274:10.3201/eid1206.051576
2818:Swine Diseases (Chest)
2297:10.3201/eid1312.061323
2102:10.1089/vbz.2006.6.338
1939:. Health Alert Network
1581:"Pandemic (H1N1) 2009"
1148:Influenza-like illness
1108:There were reports of
1086:
941:recommends the use of
829:
791:
698:
543:
535:
377:differential diagnosis
338:influenza-like illness
325:
295:
178:influenza-like illness
25:Pandemic H1N1/09 virus
6673:Animal viral diseases
6492:1989–1990 UK outbreak
6454:Asian flu (1957-1958)
3940:The Veterinary Record
3462:. NIH. Archived from
3416:. LHC. Archived from
3046:. Cdc.gov. 2009-05-13
2822:Iowa State University
2779:10.1055/s-2007-976487
2208:10.3382/ps.2008-00335
2019:"Influenza Factsheet"
1961:. MSNBC. 2009-07-13.
1190:2009 Northern Ireland
1080:
827:
790:
696:
541:
533:
421:electrolyte imbalance
321:
293:
102:Swine influenza virus
6459:Hong Kong flu (1968)
6251:Pandemic preparation
5796:Combating H3N2 Virus
5596:Van Reeth K (2007).
4854:on October 16, 2009.
4832:on October 16, 2009.
4788:on October 13, 2009.
3952:10.1136/vr.135.9.199
3020:. AP. Archived from
2912:10.1128/JCM.00904-06
2641:(Suppl 4): D49–D53.
2395:10.1128/JCM.01257-07
1420:on January 13, 2010.
1112:(GBS), a paralyzing
1091:A/Victoria/75 (H3N2)
922:secondary infections
714:are in development.
683:Madison County, Ohio
268:difficulty breathing
221:Spanish flu pandemic
132:and the subtypes of
66:H1N1 influenza virus
5602:Veterinary Research
5559:Journal of Virology
5316:2020PNAS..11717204S
5310:(29): 17204–17210.
5133:on 12 February 2016
4770:on August 23, 2009.
4065:10.1038/nature04824
4056:2006Natur.440E...9A
4009:2008MolPE..47.1100V
3600:2014PLoSO...9k5815S
3466:on October 13, 2009
2853:2007PNAS..10420949M
2847:(52): 20949–20954.
2554:2010PLoSO...5.9388D
1199:2015 and 2019 India
712:point-of-care tests
701:The CDC recommends
401:respiratory failure
340:. Symptoms include
238:in 2015, with over
59:Electron microscope
6449:Spanish flu (1918)
6368:Baloxavir marboxil
6193:West Bengal (2008)
6128:1977 (Russian flu)
6123:1918 (Spanish flu)
5185:. 14 February 2008
5048:The Times of India
4233:The New York Times
3821:The New York Times
3190:on April 30, 2009.
3145:www.britannica.com
3075:on 10 January 2016
1587:on April 28, 2009.
1561:. 20 November 2019
1087:
830:
792:
708:seasonal influenza
699:
544:
536:
326:
308:Hodgkin's lymphoma
296:
246:Signs and symptoms
210:general discomfort
83:Infectious disease
6660:
6659:
6577:
6576:
6507:
6506:
6487:Fujian flu (H3N2)
6409:
6408:
6288:
6287:
6259:
6258:
6214:Genetic structure
6157:
6156:
5961:Influenza A virus
5900:Genome sequencing
5837:
5836:
5565:(17): 8951–8959.
5266:(Press release).
4946:on March 20, 2015
4810:on July 26, 2011.
4530:(15): 2114–2120.
3908:Heinen P (2003).
3755:978-0-309-09504-4
3024:on 31 August 2012
2906:(11): 3923–3927.
2814:"Swine Influenza"
2481:on July 27, 2011.
2291:(12): 1871–1878.
2242:(22): 4376–4381.
1684:. 3 October 2018.
1459:978-1-4421-6742-1
1446:"Swine influenza"
1385:COVID-19 pandemic
1045:2009 flu pandemic
1023:1918 flu pandemic
999:1918 flu pandemic
972:1918 flu pandemic
853:Social distancing
834:infection control
818:mucosal membranes
450:Intensive farming
319:
231:officially over.
217:2009 flu pandemic
88:
87:
30:Medical condition
6710:
6683:Health disasters
6591:Acute bronchitis
6516:
6515:
6469:Swine flu (2009)
6464:1977 Russian flu
6422:
6421:
6358:
6299:
6298:
6270:
6269:
6168:
6167:
6133:2009 (Swine flu)
6111:
6110:
5931:Orthomyxoviridae
5864:
5857:
5850:
5841:
5840:
5802:
5801:
5784:Health-EU portal
5713:
5695:
5670:
5660:
5627:
5617:
5592:
5582:
5549:
5524:(S10): S39–S43.
5512:
5502:
5459:
5458:
5456:
5454:
5437:
5428:
5427:
5425:
5423:
5412:
5406:
5405:
5403:
5401:
5380:
5374:
5373:
5371:
5369:
5354:
5348:
5347:
5337:
5327:
5295:
5280:
5279:
5277:
5275:
5260:
5247:
5246:
5244:
5242:
5227:
5221:
5220:
5218:
5216:
5201:
5195:
5194:
5192:
5190:
5175:
5169:
5168:
5166:
5164:
5149:
5143:
5142:
5140:
5138:
5119:
5113:
5112:
5110:
5108:
5089:
5083:
5082:
5080:
5079:
5074:. 26 August 2017
5064:
5058:
5057:
5055:
5054:
5040:
5034:
5033:
5031:
5030:
5016:
5010:
5009:
5002:
4996:
4995:
4994:. 12 March 2015.
4988:
4982:
4981:
4979:
4977:
4962:
4956:
4955:
4953:
4951:
4942:. Archived from
4929:
4923:
4922:
4920:
4919:
4904:
4898:
4897:
4895:
4894:
4883:
4877:
4876:
4874:
4873:
4862:
4856:
4855:
4850:. Archived from
4840:
4834:
4833:
4828:. Archived from
4818:
4812:
4811:
4806:. Archived from
4796:
4790:
4789:
4784:. Archived from
4778:
4772:
4771:
4766:. Archived from
4760:
4754:
4753:
4751:
4749:
4736:
4712:
4706:
4705:
4676:
4670:
4669:
4667:
4666:
4655:
4649:
4648:
4638:
4636:10.4065/73.3.243
4614:
4608:
4607:
4579:
4573:
4572:
4570:
4569:
4554:
4548:
4547:
4515:
4509:
4508:
4480:
4474:
4473:
4437:
4431:
4430:
4428:
4427:
4416:
4410:
4409:
4402:
4391:
4390:
4361:
4355:
4354:
4352:
4351:
4332:
4326:
4325:
4297:
4291:
4290:
4289:. 28 April 2009.
4279:
4273:
4272:
4254:
4248:
4247:
4245:
4244:
4235:. Archived from
4225:
4219:
4218:
4208:
4176:
4167:
4166:
4156:
4146:
4131:Virology Journal
4122:
4113:
4112:
4092:
4086:
4085:
4067:
4035:
4029:
4028:
4003:(3): 1100–1110.
3992:
3986:
3985:
3979:
3971:
3935:
3929:
3928:
3926:
3925:
3905:
3899:
3898:
3897:. 26 April 2009.
3887:
3881:
3880:
3870:
3838:
3825:
3824:
3812:
3806:
3805:
3777:
3768:
3767:
3729:
3718:
3717:
3715:
3714:
3703:
3697:
3696:
3689:
3683:
3682:
3672:
3662:
3638:
3632:
3631:
3621:
3611:
3579:
3573:
3572:
3570:
3568:
3559:. Archived from
3549:
3543:
3542:
3530:
3524:
3523:
3513:
3481:
3475:
3474:
3472:
3471:
3456:
3450:
3449:
3447:
3446:
3435:
3429:
3428:
3426:
3425:
3410:
3404:
3403:
3401:
3400:
3389:
3383:
3382:
3380:
3379:
3368:
3362:
3361:
3359:
3358:
3347:
3341:
3340:
3338:
3337:
3326:
3320:
3319:
3317:
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3295:
3285:
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3247:
3246:
3239:
3233:
3232:
3222:
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3191:
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3155:
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3130:
3128:
3127:
3112:
3106:
3105:
3103:
3102:
3091:
3085:
3084:
3082:
3080:
3071:. Archived from
3061:
3055:
3054:
3052:
3051:
3040:
3034:
3033:
3031:
3029:
3013:
3007:
3006:
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3002:
2991:
2985:
2984:
2974:
2964:
2949:Virology Journal
2940:
2934:
2933:
2923:
2891:
2885:
2884:
2874:
2864:
2832:
2826:
2825:
2810:
2799:
2798:
2762:
2756:
2755:
2745:
2713:
2704:
2703:
2675:
2669:
2668:
2658:
2626:
2620:
2619:
2611:. Archived from
2592:
2586:
2585:
2575:
2565:
2533:
2527:
2525:
2523:
2522:
2510:
2504:
2503:
2501:
2500:
2489:
2483:
2482:
2480:
2474:. Archived from
2473:
2464:
2458:
2457:
2447:
2423:
2417:
2416:
2406:
2389:(3): 1067–1075.
2374:
2368:
2367:
2357:
2325:
2319:
2318:
2308:
2276:
2270:
2269:
2259:
2227:
2221:
2220:
2210:
2186:
2177:
2176:
2158:
2130:
2124:
2123:
2113:
2081:
2075:
2074:
2064:
2053:10.1289/ehp.8837
2032:
2026:
2025:
2023:
2015:
2000:
1999:
1997:
1995:
1990:. April 14, 2010
1980:
1974:
1973:
1971:
1970:
1955:
1949:
1948:
1946:
1944:
1932:
1923:
1922:
1920:
1919:
1901:"H1N1 Influenza"
1896:
1890:
1889:
1887:
1886:
1871:
1865:
1864:
1854:
1837:(8): 1084–1088.
1822:
1809:
1808:
1798:
1788:
1764:
1758:
1757:
1755:
1753:
1742:
1736:
1735:
1725:
1701:
1686:
1685:
1678:
1672:
1671:
1661:
1637:
1618:
1617:
1615:
1614:
1605:. Archived from
1595:
1589:
1588:
1583:. Archived from
1577:
1571:
1570:
1568:
1566:
1551:
1545:
1544:
1542:
1540:
1525:
1519:
1518:
1482:
1476:
1475:
1473:
1471:
1466:on March 4, 2016
1462:. Archived from
1444:Wells T (2008).
1441:
1422:
1421:
1416:. Archived from
1406:
1323:paper from the
1158:2007 Philippines
796:antigenic shifts
744:
320:
53:
33:
32:
6718:
6717:
6713:
6712:
6711:
6709:
6708:
6707:
6663:
6662:
6661:
6656:
6630:
6573:
6552:
6503:
6473:
6418:
6416:
6405:
6372:
6356:
6303:Antiviral drugs
6284:
6255:
6241:Human mortality
6234:clinical trials
6202:
6153:
6137:
6100:
5964:
5962:
5955:
5919:
5873:
5868:
5838:
5833:
5832:
5813:
5721:
5716:
5485:(10): 799–811.
5468:
5466:Further reading
5463:
5462:
5452:
5450:
5438:
5431:
5421:
5419:
5414:
5413:
5409:
5399:
5397:
5381:
5377:
5367:
5365:
5364:on July 3, 2020
5356:
5355:
5351:
5296:
5283:
5273:
5271:
5262:
5261:
5250:
5240:
5238:
5237:. 16 March 2017
5229:
5228:
5224:
5214:
5212:
5211:. 15 March 2017
5203:
5202:
5198:
5188:
5186:
5177:
5176:
5172:
5162:
5160:
5159:. 22 April 2015
5151:
5150:
5146:
5136:
5134:
5121:
5120:
5116:
5106:
5104:
5091:
5090:
5086:
5077:
5075:
5066:
5065:
5061:
5052:
5050:
5042:
5041:
5037:
5028:
5026:
5018:
5017:
5013:
5004:
5003:
4999:
4990:
4989:
4985:
4975:
4973:
4972:. 12 March 2015
4964:
4963:
4959:
4949:
4947:
4930:
4926:
4917:
4915:
4906:
4905:
4901:
4892:
4890:
4885:
4884:
4880:
4871:
4869:
4864:
4863:
4859:
4842:
4841:
4837:
4820:
4819:
4815:
4798:
4797:
4793:
4780:
4779:
4775:
4762:
4761:
4757:
4747:
4745:
4713:
4709:
4677:
4673:
4664:
4662:
4657:
4656:
4652:
4615:
4611:
4580:
4576:
4567:
4565:
4556:
4555:
4551:
4516:
4512:
4481:
4477:
4438:
4434:
4425:
4423:
4418:
4417:
4413:
4404:
4403:
4394:
4362:
4358:
4349:
4347:
4340:Washington D.C.
4334:
4333:
4329:
4298:
4294:
4281:
4280:
4276:
4255:
4251:
4242:
4240:
4226:
4222:
4177:
4170:
4123:
4116:
4093:
4089:
4036:
4032:
3993:
3989:
3973:
3972:
3936:
3932:
3923:
3921:
3906:
3902:
3889:
3888:
3884:
3839:
3828:
3813:
3809:
3778:
3771:
3756:
3730:
3721:
3712:
3710:
3705:
3704:
3700:
3691:
3690:
3686:
3639:
3635:
3594:(12): e115815.
3580:
3576:
3566:
3564:
3550:
3546:
3531:
3527:
3482:
3478:
3469:
3467:
3458:
3457:
3453:
3444:
3442:
3437:
3436:
3432:
3423:
3421:
3412:
3411:
3407:
3398:
3396:
3391:
3390:
3386:
3377:
3375:
3370:
3369:
3365:
3356:
3354:
3349:
3348:
3344:
3335:
3333:
3328:
3327:
3323:
3314:
3312:
3307:
3306:
3299:
3268:(6): 997–1000.
3254:
3250:
3241:
3240:
3236:
3199:
3195:
3184:Custom Vaccines
3178:
3177:
3173:
3164:
3163:
3159:
3150:
3148:
3139:
3138:
3134:
3125:
3123:
3114:
3113:
3109:
3100:
3098:
3093:
3092:
3088:
3078:
3076:
3063:
3062:
3058:
3049:
3047:
3042:
3041:
3037:
3027:
3025:
3014:
3010:
3000:
2998:
2993:
2992:
2988:
2941:
2937:
2892:
2888:
2833:
2829:
2812:
2811:
2802:
2763:
2759:
2714:
2707:
2676:
2672:
2627:
2623:
2615:on 6 May 2009.
2593:
2589:
2534:
2530:
2520:
2518:
2511:
2507:
2498:
2496:
2491:
2490:
2486:
2478:
2471:
2465:
2461:
2424:
2420:
2375:
2371:
2326:
2322:
2277:
2273:
2228:
2224:
2195:Poultry Science
2187:
2180:
2131:
2127:
2082:
2078:
2033:
2029:
2021:
2017:
2016:
2003:
1993:
1991:
1982:
1981:
1977:
1968:
1966:
1957:
1956:
1952:
1942:
1940:
1933:
1926:
1917:
1915:
1897:
1893:
1884:
1882:
1873:
1872:
1868:
1823:
1812:
1765:
1761:
1751:
1749:
1744:
1743:
1739:
1702:
1689:
1680:
1679:
1675:
1638:
1621:
1612:
1610:
1597:
1596:
1592:
1579:
1578:
1574:
1564:
1562:
1553:
1552:
1548:
1538:
1536:
1527:
1526:
1522:
1487:Apollo Medicine
1483:
1479:
1469:
1467:
1460:
1442:
1425:
1407:
1403:
1398:
1381:
1306:
1289:
1265:
1233:
1201:
1192:
1160:
1137:
1081:U.S. President
1067:
1061:
1056:
1047:
1041:
1019:
968:
963:
934:
913:
908:
899:
872:
866:
780:
729:
720:
710:. Near-patient
691:
643:
634:
602:
528:
509:antigenic shift
484:
463:
443:
438:
433:
356:, weight loss,
323:
313:
288:
248:
91:Swine influenza
36:Swine influenza
31:
28:
17:
12:
11:
5:
6716:
6706:
6705:
6700:
6695:
6690:
6688:Swine diseases
6685:
6680:
6675:
6658:
6657:
6655:
6654:
6649:
6644:
6638:
6636:
6635:Related topics
6632:
6631:
6629:
6628:
6623:
6618:
6613:
6608:
6603:
6598:
6593:
6587:
6585:
6579:
6578:
6575:
6574:
6572:
6571:
6566:
6560:
6558:
6554:
6553:
6551:
6550:
6545:
6544:
6543:
6533:
6528:
6522:
6520:
6513:
6509:
6508:
6505:
6504:
6502:
6501:
6496:
6495:
6494:
6483:
6481:
6475:
6474:
6472:
6471:
6466:
6461:
6456:
6451:
6446:
6441:
6436:
6430:
6428:
6419:
6414:
6411:
6410:
6407:
6406:
6404:
6403:
6398:
6393:
6388:
6382:
6380:
6374:
6373:
6371:
6370:
6365:
6360:
6357:(experimental)
6352:
6351:
6350:
6345:
6340:
6335:
6325:
6324:
6323:
6318:
6307:
6305:
6296:
6290:
6289:
6286:
6285:
6283:
6282:
6276:
6274:
6267:
6261:
6260:
6257:
6256:
6254:
6253:
6248:
6243:
6238:
6237:
6236:
6226:
6221:
6216:
6210:
6208:
6204:
6203:
6201:
6200:
6198:2020s outbreak
6195:
6190:
6185:
6180:
6178:Croatia (2005)
6174:
6172:
6165:
6159:
6158:
6155:
6154:
6152:
6151:
6145:
6143:
6139:
6138:
6136:
6135:
6130:
6125:
6119:
6117:
6108:
6102:
6101:
6099:
6098:
6093:
6088:
6083:
6078:
6073:
6068:
6063:
6058:
6053:
6048:
6043:
6038:
6033:
6028:
6023:
6018:
6013:
6008:
6003:
5998:
5993:
5988:
5983:
5978:
5973:
5967:
5965:
5960:
5957:
5956:
5954:
5953:
5948:
5943:
5938:
5933:
5927:
5925:
5921:
5920:
5918:
5917:
5912:
5910:Superinfection
5907:
5902:
5897:
5892:
5887:
5881:
5879:
5878:General topics
5875:
5874:
5867:
5866:
5859:
5852:
5844:
5835:
5834:
5831:
5830:
5814:
5809:
5808:
5806:
5805:Classification
5799:
5798:
5793:
5787:
5781:
5776:
5771:
5766:
5761:
5756:
5751:
5742:
5736:
5727:
5720:
5719:External links
5717:
5715:
5714:
5671:
5643:(1): 152–179.
5628:
5608:(2): 243–260.
5593:
5550:
5513:
5469:
5467:
5464:
5461:
5460:
5429:
5407:
5375:
5349:
5281:
5248:
5222:
5196:
5170:
5144:
5114:
5097:nepalaawaj.com
5084:
5059:
5035:
5011:
4997:
4983:
4957:
4924:
4899:
4878:
4857:
4835:
4813:
4791:
4773:
4755:
4727:(2): 110–124.
4707:
4688:(4): 478–481.
4671:
4650:
4629:(3): 243–245.
4609:
4590:(1): 213–215.
4574:
4549:
4510:
4491:(6): 698–700.
4475:
4448:(4): 309–323.
4432:
4411:
4392:
4373:(2): 105–123.
4356:
4327:
4308:(3): 270–278.
4292:
4274:
4249:
4220:
4168:
4114:
4087:
4030:
3987:
3946:(9): 199–204.
3930:
3900:
3882:
3826:
3807:
3788:(2): 199–210.
3782:Virus Research
3769:
3754:
3746:10.17226/11150
3719:
3698:
3684:
3633:
3574:
3555:(2007-03-13).
3544:
3525:
3476:
3451:
3430:
3405:
3384:
3363:
3342:
3321:
3297:
3248:
3234:
3213:(3): 201–206.
3193:
3171:
3157:
3132:
3107:
3086:
3069:fortiusbio.com
3056:
3035:
3008:
2986:
2935:
2886:
2827:
2800:
2773:(2): 144–158.
2757:
2728:(2): 422–429.
2705:
2680:Virus Research
2670:
2621:
2587:
2528:
2505:
2484:
2459:
2438:(1): 101–119.
2418:
2369:
2346:10.1086/498977
2320:
2271:
2222:
2201:(4): 880–884.
2178:
2141:(3): 649–652.
2125:
2096:(4): 338–346.
2076:
2047:(2): 313–316.
2027:
2001:
1975:
1950:
1924:
1891:
1866:
1843:10.1086/512813
1810:
1773:Microorganisms
1759:
1737:
1723:10.1086/524988
1687:
1673:
1619:
1590:
1572:
1546:
1535:. 27 June 2012
1520:
1477:
1458:
1423:
1400:
1399:
1397:
1394:
1393:
1392:
1387:
1380:
1377:
1305:
1302:
1288:
1285:
1264:
1261:
1232:
1229:
1221:Andhra Pradesh
1210:Madhya Pradesh
1200:
1197:
1191:
1188:
1159:
1156:
1136:
1133:
1063:Main article:
1060:
1057:
1055:
1052:
1043:Main article:
1040:
1037:
1018:
1015:
967:
964:
962:
959:
933:
930:
912:
909:
907:
904:
898:
895:
891:Tuskegee study
868:Main article:
865:
862:
813:
812:
785:
784:
779:
772:
728:
725:
719:
716:
690:
687:
642:
639:
633:
630:
601:
600:Classification
598:
546:The influenza
527:
524:
483:
480:
462:
459:
442:
439:
437:
434:
432:
429:
425:kidney failure
287:
284:
247:
244:
86:
85:
80:
74:
73:
55:
54:
46:
45:
42:
38:
37:
29:
15:
9:
6:
4:
3:
2:
6715:
6704:
6701:
6699:
6696:
6694:
6691:
6689:
6686:
6684:
6681:
6679:
6676:
6674:
6671:
6670:
6668:
6653:
6650:
6648:
6645:
6643:
6640:
6639:
6637:
6633:
6627:
6624:
6622:
6619:
6617:
6614:
6612:
6609:
6607:
6604:
6602:
6599:
6597:
6596:Bronchiolitis
6594:
6592:
6589:
6588:
6586:
6584:
6583:Complications
6580:
6570:
6569:Fujian (H5N1)
6567:
6565:
6562:
6561:
6559:
6555:
6549:
6546:
6542:
6539:
6538:
6537:
6534:
6532:
6529:
6527:
6524:
6523:
6521:
6517:
6514:
6510:
6500:
6497:
6493:
6490:
6489:
6488:
6485:
6484:
6482:
6480:
6476:
6470:
6467:
6465:
6462:
6460:
6457:
6455:
6452:
6450:
6447:
6445:
6442:
6440:
6437:
6435:
6432:
6431:
6429:
6427:
6423:
6420:
6415:Pandemics and
6412:
6402:
6399:
6397:
6394:
6392:
6389:
6387:
6384:
6383:
6381:
6379:
6375:
6369:
6366:
6364:
6361:
6359:
6353:
6349:
6346:
6344:
6341:
6339:
6336:
6334:
6331:
6330:
6329:
6326:
6322:
6319:
6317:
6314:
6313:
6312:
6309:
6308:
6306:
6304:
6300:
6297:
6295:
6291:
6281:
6278:
6277:
6275:
6271:
6268:
6266:
6262:
6252:
6249:
6247:
6246:Social impact
6244:
6242:
6239:
6235:
6232:
6231:
6230:
6227:
6225:
6224:Global spread
6222:
6220:
6217:
6215:
6212:
6211:
6209:
6205:
6199:
6196:
6194:
6191:
6189:
6186:
6184:
6181:
6179:
6176:
6175:
6173:
6169:
6166:
6164:
6160:
6150:
6147:
6146:
6144:
6140:
6134:
6131:
6129:
6126:
6124:
6121:
6120:
6118:
6116:
6112:
6109:
6107:
6103:
6097:
6094:
6092:
6089:
6087:
6084:
6082:
6079:
6077:
6074:
6072:
6069:
6067:
6064:
6062:
6059:
6057:
6054:
6052:
6049:
6047:
6044:
6042:
6039:
6037:
6034:
6032:
6029:
6027:
6024:
6022:
6019:
6017:
6014:
6012:
6009:
6007:
6004:
6002:
5999:
5997:
5994:
5992:
5989:
5987:
5984:
5982:
5979:
5977:
5974:
5972:
5969:
5968:
5966:
5958:
5952:
5949:
5947:
5944:
5942:
5939:
5937:
5934:
5932:
5929:
5928:
5926:
5922:
5916:
5913:
5911:
5908:
5906:
5903:
5901:
5898:
5896:
5893:
5891:
5888:
5886:
5883:
5882:
5880:
5876:
5872:
5865:
5860:
5858:
5853:
5851:
5846:
5845:
5842:
5829:
5825:
5824:
5820:
5816:
5815:
5812:
5807:
5803:
5797:
5794:
5791:
5788:
5785:
5782:
5780:
5777:
5775:
5772:
5770:
5767:
5765:
5762:
5760:
5757:
5755:
5752:
5750:
5746:
5743:
5740:
5737:
5735:
5731:
5728:
5726:
5723:
5722:
5711:
5707:
5703:
5699:
5694:
5689:
5685:
5681:
5677:
5672:
5668:
5664:
5659:
5654:
5650:
5646:
5642:
5638:
5634:
5629:
5625:
5621:
5616:
5611:
5607:
5603:
5599:
5594:
5590:
5586:
5581:
5576:
5572:
5568:
5564:
5560:
5556:
5551:
5547:
5543:
5539:
5535:
5531:
5527:
5523:
5519:
5514:
5510:
5506:
5501:
5496:
5492:
5488:
5484:
5480:
5476:
5471:
5470:
5449:
5448:
5443:
5436:
5434:
5417:
5411:
5396:
5392:
5391:
5386:
5379:
5363:
5359:
5353:
5345:
5341:
5336:
5331:
5326:
5321:
5317:
5313:
5309:
5305:
5301:
5294:
5292:
5290:
5288:
5286:
5270:. 2 July 2020
5269:
5265:
5259:
5257:
5255:
5253:
5236:
5232:
5226:
5210:
5206:
5200:
5184:
5180:
5174:
5158:
5154:
5148:
5132:
5128:
5127:infonepal.com
5124:
5118:
5103:on 2016-01-30
5102:
5098:
5094:
5088:
5073:
5069:
5063:
5049:
5045:
5039:
5025:
5021:
5015:
5008:. 2015-02-17.
5007:
5001:
4993:
4987:
4971:
4967:
4961:
4945:
4941:
4940:
4935:
4928:
4913:
4909:
4903:
4888:
4882:
4867:
4861:
4853:
4849:
4845:
4839:
4831:
4827:
4823:
4817:
4809:
4805:
4801:
4795:
4787:
4783:
4777:
4769:
4765:
4759:
4744:
4740:
4735:
4730:
4726:
4722:
4718:
4711:
4703:
4699:
4695:
4691:
4687:
4683:
4675:
4660:
4654:
4646:
4642:
4637:
4632:
4628:
4624:
4620:
4613:
4605:
4601:
4597:
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4578:
4564:on 2011-06-29
4563:
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4307:
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4270:
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4253:
4239:on 2013-05-21
4238:
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3991:
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3953:
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3945:
3941:
3934:
3920:on 2009-05-06
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3605:
3601:
3597:
3593:
3589:
3585:
3578:
3563:on 2014-08-19
3562:
3558:
3554:
3548:
3540:
3536:
3529:
3521:
3517:
3512:
3507:
3503:
3499:
3496:(7): 1252–5.
3495:
3491:
3487:
3480:
3465:
3461:
3455:
3440:
3434:
3420:on 2009-10-31
3419:
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3304:
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3271:
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3259:
3252:
3245:. 2009-04-29.
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2129:
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2072:
2068:
2063:
2058:
2054:
2050:
2046:
2042:
2038:
2031:
2020:
2014:
2012:
2010:
2008:
2006:
1989:
1985:
1979:
1964:
1960:
1954:
1938:
1931:
1929:
1914:
1910:
1906:
1902:
1895:
1880:
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1870:
1862:
1858:
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1636:
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1628:
1626:
1624:
1609:on 2022-08-16
1608:
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1600:
1594:
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1576:
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1534:
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1496:
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1419:
1415:
1411:
1405:
1401:
1391:
1388:
1386:
1383:
1382:
1376:
1374:
1373:Anthony Fauci
1369:
1367:
1363:
1359:
1354:
1351:
1347:
1343:
1339:
1334:
1332:
1328:
1327:
1322:
1321:peer-reviewed
1318:
1314:
1310:
1301:
1299:
1294:
1287:2017 Maldives
1284:
1282:
1278:
1274:
1270:
1263:2016 Pakistan
1260:
1258:
1254:
1250:
1246:
1242:
1238:
1228:
1224:
1222:
1219:
1215:
1211:
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1196:
1187:
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1177:
1173:
1169:
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1155:
1151:
1149:
1145:
1143:
1132:
1130:
1129:
1122:
1118:
1115:
1114:neuromuscular
1111:
1106:
1103:
1098:
1096:
1092:
1084:
1079:
1075:
1072:
1066:
1051:
1046:
1036:
1033:
1028:
1024:
1014:
1012:
1011:meat industry
1007:
1002:
1000:
995:
993:
989:
985:
981:
977:
973:
958:
956:
952:
948:
945:(Tamiflu) or
944:
940:
929:
925:
923:
919:
903:
894:
892:
886:
884:
880:
876:
871:
861:
859:
858:Public health
854:
850:
847:
841:
839:
835:
826:
822:
819:
810:
809:
808:
805:
799:
797:
789:
782:
781:
778:
777:
771:
769:
763:
760:
755:
751:
746:
743:
738:
734:
724:
715:
713:
709:
704:
703:real-time PCR
695:
686:
684:
680:
676:
672:
668:
667:United States
664:
660:
656:
652:
648:
638:
629:
627:
623:
619:
615:
611:
607:
604:Of the three
597:
595:
591:
588:
585:
581:
577:
576:neuraminidase
573:
569:
565:
561:
560:neuraminidase
557:
556:hemagglutinin
553:
549:
540:
532:
523:
521:
516:
514:
510:
506:
503:evolved from
502:
498:
494:
490:
479:
476:
472:
468:
458:
456:
451:
446:
428:
426:
422:
418:
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127:
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119:
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103:
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61:image of the
60:
56:
52:
47:
43:
39:
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26:
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6626:Strep throat
6606:Otitis media
6547:
6183:India (2006)
5905:Reassortment
5817:
5683:
5679:
5640:
5636:
5605:
5601:
5562:
5558:
5521:
5517:
5482:
5478:
5451:. Retrieved
5447:Science News
5445:
5420:. Retrieved
5410:
5398:. Retrieved
5388:
5378:
5366:. Retrieved
5362:the original
5352:
5307:
5303:
5272:. Retrieved
5239:. Retrieved
5234:
5225:
5213:. Retrieved
5208:
5199:
5187:. Retrieved
5183:dunyanews.tv
5182:
5173:
5161:. Retrieved
5156:
5147:
5135:. Retrieved
5131:the original
5126:
5117:
5105:. Retrieved
5101:the original
5096:
5087:
5076:. Retrieved
5072:Moneycontrol
5071:
5062:
5051:. Retrieved
5047:
5038:
5027:. Retrieved
5023:
5014:
5000:
4986:
4974:. Retrieved
4969:
4960:
4948:. Retrieved
4944:the original
4937:
4927:
4916:. Retrieved
4914:. 2011-01-10
4911:
4902:
4891:. Retrieved
4889:. Gmanews.tv
4881:
4870:. Retrieved
4868:. Gmanews.tv
4860:
4852:the original
4847:
4838:
4830:the original
4825:
4816:
4808:the original
4803:
4794:
4786:the original
4776:
4768:the original
4758:
4746:. Retrieved
4724:
4720:
4710:
4685:
4681:
4674:
4663:. Retrieved
4653:
4626:
4622:
4612:
4587:
4583:
4577:
4566:. Retrieved
4562:the original
4552:
4527:
4523:
4513:
4488:
4484:
4478:
4445:
4441:
4435:
4424:. Retrieved
4414:
4370:
4366:
4359:
4348:. Retrieved
4346:. 2000-06-28
4330:
4305:
4301:
4295:
4286:
4277:
4259:
4252:
4241:. Retrieved
4237:the original
4232:
4223:
4191:(1): 23–28.
4188:
4184:
4134:
4130:
4100:
4096:
4090:
4047:
4043:
4033:
4000:
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3976:cite journal
3943:
3939:
3933:
3922:. Retrieved
3918:the original
3913:
3903:
3894:
3885:
3853:(1): 15–22.
3850:
3846:
3820:
3810:
3785:
3781:
3737:
3711:. Retrieved
3701:
3687:
3650:
3646:
3636:
3591:
3587:
3577:
3565:. Retrieved
3561:the original
3547:
3538:
3528:
3493:
3489:
3479:
3468:. Retrieved
3464:the original
3454:
3443:. Retrieved
3433:
3422:. Retrieved
3418:the original
3408:
3397:. Retrieved
3387:
3376:. Retrieved
3366:
3355:. Retrieved
3345:
3334:. Retrieved
3324:
3313:. Retrieved
3265:
3261:
3251:
3237:
3210:
3206:
3196:
3188:the original
3183:
3174:
3160:
3149:. Retrieved
3147:. 2023-08-19
3144:
3135:
3124:. Retrieved
3122:. 2022-08-05
3119:
3110:
3099:. Retrieved
3089:
3077:. Retrieved
3073:the original
3068:
3059:
3048:. Retrieved
3038:
3026:. Retrieved
3022:the original
3011:
2999:. Retrieved
2989:
2952:
2948:
2938:
2903:
2899:
2889:
2844:
2840:
2830:
2817:
2770:
2766:
2760:
2725:
2721:
2686:(1): 71–79.
2683:
2679:
2673:
2638:
2634:
2624:
2616:
2613:the original
2600:
2590:
2548:(2): e9388.
2545:
2541:
2531:
2519:. Retrieved
2508:
2497:. Retrieved
2487:
2476:the original
2462:
2435:
2431:
2421:
2386:
2382:
2372:
2340:(1): 14–20.
2337:
2333:
2323:
2288:
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2128:
2093:
2089:
2079:
2044:
2040:
2030:
1992:. Retrieved
1987:
1978:
1967:. Retrieved
1953:
1941:. Retrieved
1916:. Retrieved
1904:
1894:
1883:. Retrieved
1869:
1834:
1830:
1779:(9): E1405.
1776:
1772:
1762:
1750:. Retrieved
1740:
1713:
1709:
1676:
1652:(2): 46–53.
1649:
1645:
1611:. Retrieved
1607:the original
1602:
1593:
1585:the original
1575:
1563:. Retrieved
1558:
1549:
1537:. Retrieved
1532:
1523:
1493:(1): 21–31.
1490:
1486:
1480:
1468:. Retrieved
1464:the original
1449:
1418:the original
1404:
1370:
1355:
1346:surveillance
1335:
1330:
1324:
1307:
1290:
1271:province of
1266:
1234:
1225:
1202:
1193:
1176:Metro Manila
1166:and central
1161:
1152:
1146:
1138:
1126:
1123:
1119:
1107:
1099:
1088:
1068:
1048:
1032:phylogenetic
1020:
1003:
996:
980:reassortment
969:
935:
926:
914:
900:
897:Surveillance
887:
873:
851:
842:
831:
814:
800:
793:
775:
774:
764:
747:
730:
721:
700:
671:reassortants
644:
635:
626:reassortment
620:being rare.
603:
554:"spikes" of
552:glycoprotein
545:
517:
485:
475:reassortment
464:
447:
444:
441:Between pigs
436:Transmission
407:(leading to
398:
393:
380:
374:
327:
297:
249:
233:
214:
194:muscle pains
180:and include
170:
158:
113:
109:
105:
101:
90:
89:
72:in diameter.
6611:Pharyngitis
6557:Non-mammals
6338:Laninamivir
6333:Oseltamivir
6321:Rimantadine
6149:2009 A/H1N1
5951:Influenza D
5946:Influenza C
5941:Influenza B
5936:Influenza A
4442:Drug Safety
4103:(1): 4–21.
3028:1 September
1599:"Swine Flu"
1350:nasal swabs
1172:hog cholera
1164:Nueva Ecija
1102:vaccination
1095:Gerald Ford
1083:Gerald Ford
955:rimantadine
943:oseltamivir
864:Vaccination
768:quarantined
759:vaccination
641:Influenza A
632:Influenza C
622:Influenza B
618:influenza C
614:influenza A
594:rimantadine
587:adamantanes
413:dehydration
350:sore throat
280:poor growth
276:weight loss
272:miscarriage
190:sore throat
134:influenza A
130:influenza C
41:Other names
6667:Categories
6363:Umifenovir
6355:Peramivir
6316:Amantadine
6294:Treatments
5915:Flu season
5163:8 February
5137:8 February
5107:8 February
5078:2017-08-26
5053:2017-08-17
5029:2017-08-17
4976:10 January
4918:2011-01-20
4893:2009-04-25
4872:2009-04-25
4665:2009-05-07
4568:2011-05-22
4426:2011-08-17
4350:2009-08-21
4243:2017-02-13
3924:2009-05-04
3713:2009-04-27
3470:2009-10-15
3445:2009-10-15
3424:2009-10-15
3399:2009-05-12
3378:2009-04-27
3357:2009-04-26
3336:2011-05-22
3315:2009-04-26
3151:2023-08-23
3126:2023-08-23
3101:2011-05-22
3050:2011-05-22
3016:Myers AL.
2521:2009-04-26
2499:2009-04-26
2156:10261/9789
1969:2011-05-22
1918:2022-03-07
1905:StatPearls
1885:2011-05-22
1613:2017-09-21
1362:antibodies
1309:G4 EA H1N1
1281:Faisalabad
1231:2015 Nepal
951:amantadine
920:and other
718:Prevention
590:amantadine
580:M2 protein
564:antibodies
306:, one had
162:antibodies
70:nanometres
63:reassorted
6698:Pandemics
6693:Influenza
6621:Sinusitis
6616:Pneumonia
6512:Non-human
6479:Epidemics
6426:Pandemics
6417:epidemics
6396:Pandemrix
6348:Zanamivir
6343:Peramivir
6280:2020–2022
6273:Outbreaks
6188:UK (2007)
6171:Outbreaks
6115:Pandemics
5895:Treatment
5871:Influenza
5189:9 January
5157:aa.com.tr
4950:March 20,
4939:The Hindu
4748:13 August
4661:. Cdc.gov
4287:Salon.com
3567:15 August
3374:. Cdc.gov
3332:. Cdc.gov
3079:9 January
2795:260316848
2609:1569-0830
1994:April 17,
1943:April 27,
1752:April 27,
1515:263480804
1507:0976-0016
1470:April 30,
1241:Kathmandu
1214:Rajasthan
1135:1988 U.S.
1059:1976 U.S.
1054:Outbreaks
1039:U.S. 2009
986:produced
966:Pandemics
947:zanamivir
918:pneumonia
906:Treatment
750:evolution
689:Diagnosis
610:human flu
584:antiviral
558:(HA) and
526:Structure
520:West Java
515:in pigs.
461:To humans
455:wild boar
405:pneumonia
394:confirmed
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