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Eastern equine encephalitis

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eastern part of the United States and is often associated with coastal plains. It can most commonly be found in East Coast and Gulf Coast states. In Florida, about one to two human cases are reported a year, although over 60 cases of equine encephalitis are reported. In years in which conditions are favorable for the disease, the number of equine cases is over 200. Diagnosing equine encephalitis is challenging because many of the symptoms are shared with other illnesses and patients can be asymptomatic. Confirmations may require a sample of cerebrospinal fluid or brain tissue, although CT scans and MRI scans are used to detect encephalitis. This could be an indication that the need to test for EEE is necessary. If a biopsy of the cerebrospinal fluid is taken, it is sent to a specialized laboratory for testing.
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caudate head (arrow) and diencephalic region. B) Axial fluid attenuated inversion recovery image from brain MRI scan of patient 14 on hospital day 2; the image shows abnormal T2 hyperintense regions of the bimesial temporal regions (thick arrows) with accompanying abnormal T2 hyperintense regions of the dorsal pontomesencephalic regions (thin arrows). C, D) FLAIR images from brain MRI scan of patient 15 on hospital day 3. C) Abnormal T2 hyperintense caudate and thalamic nuclei, most prominent on the right (arrow). D) Abnormal T2 hyperintense regions are most prominent in the right parietotemporal gray matter (arrow) and subcortical white matter but are also seen scattered throughout.
382:, was first isolated from infected horse brains in 1933. In 1938, the first confirmed human cases were identified when 30 children died of encephalitis in the Northeastern United States. These cases coincided with outbreaks in horses in the same regions. The fatality rate in humans is 33%, and currently no cure is known for human infections. This virus has four variations in the types in lineage. The most common to the human disease is group 1, which is considered to be endemic in North America and the Caribbean, while the other three lineages, groups IIA, IIB, and III, are typically found in Central and South America, causing equine illness. 226: 609: 512: 44: 258: 550: 689: 3613: 3601: 659:, Scotland became the first European victim of this disease. The man had visited New Hampshire during the summer of 2007, on a fishing vacation, and was diagnosed as having EEE on 13 September 2007. He fell ill with the disease on 31 August 2007, just one day after flying home, and later fell into a coma. He later awoke from the coma with severe brain injuries. 478:
Humans, horses, and most other infected mammals do not circulate enough viruses in their blood to infect additional mosquitoes. Some cases of EEE have been contracted through laboratory exposures or from exposure of the eyes, lungs, or skin wounds to brain or spinal cord matter from infected animals.
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After inoculation by the vector, the virus travels via lymphatics to lymph nodes, and replicates in macrophages and neutrophils, resulting in lymphopenia, leukopenia, and fever. Subsequent replication occurs in other organs, leading to viremia. Symptoms in horses occur 1–3 weeks after infection, and
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As of September 2019, a notable uptick in cases erupted in New England and Michigan, prompting some health departments to declare an outbreak. As of 31 October 2019, five people died in Michigan, three people died in Connecticut, one person died in Rhode Island, one person died in Alabama,
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These two clades may actually be distinct viruses. The North American strains appear to be monotypic with a mutation rate of 2.7 × 10 substitutions/site/year (s/s/y). It appears to have diverged from the other strains 922 to 4,856 years ago. The other strains are divided into two main clades and a
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Several states in the Northeast U.S. have had increased virus activity since 2004. Between 2004 and 2006, at least ten human cases of EEE were reported in Massachusetts. In 2006, about 500,000 acres (2,000 km) in southeastern Massachusetts were treated with mosquito adulticides to reduce the
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Magnetic resonance images (MRIs) and computed tomography (CT) neuroradiographs showing lesions in brains of three children with eastern equine encephalitis: A) Results of noncontrast CT scan of the brain of patient 12 on hospital day 2; the neuroradiograph shows subtle hypoattenuation of the left
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Transmission of EEEV to mammals (including humans) occurs via other mosquito species, which feed on the blood of both birds and mammals. These other mosquitoes are referred to as "bridge vectors" because they carry the virus from the avian hosts to other types of hosts, particularly mammals. The
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of EEE in horses have continued to occur regularly in the United States. It can also be identified in donkeys and zebras. Rarely, it can also infect humans. Due to the rarity of the disease, its occurrence can cause economic impact beyond the cost of horses and poultry. EEE is found today in the
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The incubation period for Eastern equine encephalitis virus (EEEV) disease ranges from 4 to 10 days. The illness can progress either systematically or encephalitically, depending on the person's age. Encephalitic disease involves swelling of the brain and can be asymptomatic, while the systemic
503:. Most vaccinations for EEE consist of the killed virus. For humans, no vaccine for EEE is available; prevention involves reducing the risk of exposure. Using insect repellent, wearing protective clothing, and reducing the amount of standing water is the best means for prevention. 757:, inability to swallow, and abnormal gait. Paralysis follows, causing the horse to have difficulty raising its head. The horse usually suffers complete paralysis and death 2–4 days after symptoms appear. Mortality rates among horses with the eastern strain range from 70 to 90%. 169:
illness occurs very abruptly. Those with the systemic illness usually recover within 1–2 weeks. While the encephalitis is more common among infants, in adults and children, it usually manifests after experiencing the systemic illness. Symptoms include high
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In 2024, a man in New Hampshire died due to the virus. In Plymouth Massachusetts, the town closed parks in the evenings due to new cases being found in August 2024. Spraying for mosquitos is being used to reduce the risk of EEE.
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Nervous signs appear during the fever that include sensitivity to sound, periods of excitement, and restlessness. Brain lesions appear, causing drowsiness, drooping ears, circling, aimless wandering,
1576: 201:. Due to the virus's effect on the brain, patients who survive can be left with mental and physical impairments, such as personality disorders, paralysis, seizures, and intellectual impairment. 536:. About 4% of humans known to be infected develop symptoms, with a total of about six cases per year in the US. A third of these cases die, and many survivors suffer permanent brain damage. 1514: 1730: 825: 643:
As of September 2020, there were five confirmed human cases between Massachusetts and Wisconsin. As of October 9, 2020, one person died in Michigan, and one person died in Wisconsin.
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third smaller one. The two main clades diverged between 577 and 2,927 years ago. The mutation rate in the genome has been estimated to be 1.2 × 10 s/s/y.
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From its natural reservoir in birds, EEEV is known to infect reptiles and amphibians as well as both humans and other mammals, including horses.
1722: 933:"Evolutionary patterns of eastern equine encephalitis virus in North versus South America suggest ecological differences and taxonomic revision" 1385: 840: 560: 1115: 3571: 3283: 706: 667:
EEEV was one of more than a dozen agents that the United States researched as potential biological weapons before the nation suspended its
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one person died in Indiana, and three people died in Massachusetts. The virus was also found in goats, in turkeys, in deer, and in horses.
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https://www.plymouth-ma.gov/DocumentCenter/View/6479/Plymouth-Park-and-Field-Closures---EEE-Press-Release?bidId=
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begin with a fever that may reach as high as 106 °F (41 °C). The fever usually lasts for 24–48 hours.
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People over the age of 50 or younger than the age of 16 are at greatest risk of developing severe disease.
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high fever, muscle pain, altered mental status, headache, meningeal irritation, photophobia, and seizures
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that is present in North, Central, and South America, and the Caribbean. EEE was first recognized in
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risk of humans contracting EEE. Several human cases were reported in New Hampshire, as well.
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United States Department of Agriculture Animal and Plant Health Inspection Service
3605: 3232: 2862: 2855: 2850: 2653: 2564: 2444: 2439: 2180: 1971: 1247:"Second Human Case Of EEE Confirmed In Mass.; 10 More Towns Now At Critical Risk" 525: 521: 330: 306: 1029: 1009:"Transmission of the Virus of Equine Encephalomy-elîtis by Aëdes taeniorhynchus" 908: 891: 3617: 3059: 2747: 2718: 244: 3114: 2154: 892:"Clinical and neuroradiographic manifestations of eastern equine encephalitis" 491:, which are usually given with vaccinations for other diseases, most commonly 225: 3627: 3495: 3406: 3316: 3264: 3185: 3167: 3089: 3009: 2885: 2867: 2779: 2569: 2226: 754: 318: 294: 133: 3420: 3246: 3020: 2835: 2754: 2688: 2677: 2634: 2469: 2462: 2457: 2412: 2377: 2320: 2262: 2012:"Chemical and Biological Weapons: Possession and Programs Past and Present" 1037: 966: 533: 451: 2122: 2077: 917: 528:, and supportive measures (treating symptoms) such as intravenous fluids, 247:: The virus particles (virions) are coloured red. (83,900x magnification) 3504: 3251: 3241: 3145: 3126: 2953: 2948: 2844: 2823: 2608: 2542: 2499: 2429: 2351: 2275: 2230: 948: 671:
in 1969, a few years before signing (1972) and then ratifying (1975) the
488: 432: 190: 174: 72: 3550: 1599:"Mass. retracts number of EEE deaths; confirms 12th human case of virus" 3438: 3368: 3338: 3288: 3172: 3054: 2935: 2790: 2668: 2599: 2481: 2330: 1193:"Two more EEE human cases reported, raising the state's count to seven" 713: in this section. Unsourced material may be challenged and removed. 379: 354: 342: 237: 3447: 2239: 1632:"A 2nd Person In Mass. Is Diagnosed With Mosquito-Linked EEE Disease" 407: 282: 145: 128: 92: 3466: 1569:"UPDATE: Mass. Health Officials Give New Info on EEE-Related Deaths" 688: 620:
In July 2012, the virus was identified in a mosquito of the species
3489: 2223: 1830:"New Hampshire resident dies from EEE, a rare mosquito-borne virus" 629: 415: 241: 198: 194: 186: 182: 123: 1723:"Eastern equine encephalitis kills another horse in Oswego County" 1355:"Connecticut Eastern equine encephalitis death is 10th nationwide" 3377: 3326: 3304: 1635: 1507:"1st Eastern Equine Encephalitis Human Death Reported in Indiana" 1477:"Mosquito-borne virus kills 1 in Alabama: What to know about EEE" 1301: 500: 403: 1415:"Fifth person in Michigan dies from Eastern Equine Encephalitis" 394:
EEEV is capable of infecting a wide range of animals, including
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Eastern equine encephalitis virus (EEEV) is closely related to
2222: 1298:"Massachusetts man infected with EEE now in coma, family says" 987:. U.S. Centers for Disease Control and Prevention. 20 May 2024 269: 170: 137: 3612: 1805:"Wisconsin woman dies of rare disease carried by mosquitoes" 1386:"Fourth person dies from mosquito-borne illness in Michigan" 2486: 1270:"It's code red for EEE in nine communities south of Boston" 411: 399: 889: 2074: 612:
A disease-incidence map for human cases of EEE, 1964–2010
2108:. Virus Pathogen Database and Analysis Resource (ViPR). 1694:"18 Louisiana Horses Confirmed Positive for EEE or WNV" 632:. On 28 July 2012, the virus was found in mosquitos in 487:
The disease can be prevented in horses with the use of
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No cure for EEE has been found. Treatment consists of
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Deresiewicz RL, Thaler SJ, Hsu L, Zamani AA (1997).
1225:"Why Is EEE Highest In Southeastern Massachusetts?" 981:"Transmission of Eastern Equine Encephalitis Virus" 2076: 1007: 1656: 1654: 1652: 930: 3625: 2075:Evans J, Borton A, Hintz H, Van Vleck L (1977). 1190: 1324:"7 dead from rare disease spread by mosquitoes" 931:Arrigo NC, Adams AP, Weaver SC (January 2010). 87:Cerebrospinal fluid or brain tissue examination 3674:Viral infections of the central nervous system 1649: 1408: 1406: 410:. The virus is maintained in nature through a 2208: 858: 557:The examples and perspective in this section 1566: 378:The causative agent, later identified as an 2659:Severe fever with thrombocytopenia syndrome 1403: 1191:Andersen T, McDonald D (6 September 2019). 2215: 2201: 2073:Source for a portion of this information: 2067:Centers for Disease Control and Prevention 1093:Centers for Disease Control and Prevention 1067:Centers for Disease Control and Prevention 790:Centers for Disease Control and Prevention 575:, or create a new section, as appropriate. 224: 42: 1116:"Mosquito-borne virus infects 2d in Mass" 956: 924: 907: 729:Learn how and when to remove this message 591:Learn how and when to remove this message 2004: 1629: 1567:Pescaro M, Klein A (25 September 2019). 1089:"Eastern Equine Encephalitis Fact Sheet" 1057: 1055: 607: 510: 1081: 837:United States Department of Agriculture 3626: 1779:"West Michigan resident with EEE dies" 1720: 1412: 1383: 1352: 1348: 1346: 1344: 1321: 1005: 3471: 3470: 3030:Hemorrhagic fever with renal syndrome 2196: 2031: 1733:from the original on 14 November 2019 1611:from the original on 14 November 2019 1579:from the original on 14 November 2019 1548:from the original on 14 November 2019 1535: 1517:from the original on 14 November 2019 1487:from the original on 14 November 2019 1446:"Third person in state dies from EEE" 1425:from the original on 14 November 2019 1365:from the original on 14 November 2019 1295: 1267: 1205:from the original on 14 November 2019 1134: 1113: 1052: 780: 778: 776: 774: 772: 770: 163: 1474: 1443: 1167: 711:adding citations to reliable sources 682: 662: 543: 497:Venezuelan equine encephalitis virus 154:Venezuelan equine encephalitis virus 2533:Venezuelan equine encephalomyelitis 2034:"Eastern Equine Encephalitis (EEE)" 1893:"EEE (Eastern Equine Encephalitis)" 1341: 818: 786:"About Eastern Equine Encephalitis" 13: 2055: 826:"Eastern Equine Encephalomyelitis" 767: 136:, United States, in 1831, when 75 97:~33% fatality rate in severe cases 14: 3685: 3511:Eastern equine encephalitis virus 3481:Eastern equine encephalitis virus 2098: 1968:"Man in coma after mosquito bite" 1670:. 22 October 2019. Archived from 1137:"Middleborough boy with EEE dies" 985:Eastern Equine Encephalitis Virus 493:western equine encephalitis virus 369:Eastern equine encephalitis virus 218:Eastern equine encephalitis virus 158:western equine encephalitis virus 66:Eastern equine encephalitis virus 3611: 3599: 2523:Western equine encephalomyelitis 2513:Eastern equine encephalomyelitis 1943:"Massachusetts arbovirus update" 687: 678: 603: 548: 256: 2648:Crimean–Congo hemorrhagic fever 2025: 1978: 1960: 1935: 1910: 1885: 1867:"Mosquito control and spraying" 1859: 1848: 1822: 1797: 1771: 1745: 1714: 1686: 1623: 1591: 1560: 1529: 1499: 1468: 1437: 1377: 1315: 1289: 1261: 1239: 1217: 1184: 1161: 1128: 1107: 698:needs additional citations for 539: 475:also frequently bites turtles. 2810:Kemerovo tickborne viral fever 1630:Anderson DJ (17 August 2019). 1322:LaPook J (21 September 2019). 999: 973: 883: 655:In October 2007, a citizen of 1: 3067:Hantavirus pulmonary syndrome 2306:Jamestown Canyon encephalitis 2063:"Eastern Equine Encephalitis" 1536:Klein A (26 September 2019). 1063:"Eastern Equine Encephalitis" 866:"Eastern Equine Encephalitis" 760: 673:Biological Weapons Convention 482: 2961:Venezuelan hemorrhagic fever 1413:Mahieu D (15 October 2019). 1249:. CBS Boston. 16 August 2019 1227:. CBS Boston. 22 August 2019 506: 389: 122:), is a disease caused by a 7: 2983:Brazilian hemorrhagic fever 2971:Argentine hemorrhagic fever 1721:Mulder J (1 October 2019). 1444:Cuda A (1 September 2019). 1384:Miller K (2 October 2019). 1353:Almasy S (2 October 2019). 1030:10.1126/science.85.2198.178 909:10.1056/NEJM199706263362604 571:, discuss the issue on the 104:Eastern equine encephalitis 27:Eastern equine encephalitis 10: 3690: 2995:Bolivian hemorrhagic fever 2875:Sandfly fever Naples virus 2032:Young A (28 August 2020). 1809:Milwaukee Journal Sentinel 1475:Gore L (28 October 2019). 1296:Congi S (13 August 2019). 1268:Seltz J (13 August 2019). 1135:Zheng Y (31 August 2006). 1114:Zheng Y (16 August 2008). 810:: CS1 maint: url-status ( 669:biological-weapons program 3479: 3436: 3404: 3395: 3366: 3336: 3314: 3303: 3262: 3230: 3183: 3124: 3113: 3087: 3018: 2933: 2922: 2911: 2883: 2833: 2822: 2788: 2768: 2686: 2663:Huaiyangshan banyangvirus 2632: 2621: 2597: 2497: 2375: 2260: 2249: 2238: 2116: 1667:Pittsburgh Tribune-Review 744: 650: 634:Pittsfield, Massachusetts 622:Coquillettidia perturbans 458:Coquillettidia perturbans 251: 232: 223: 216: 118:(not to be confused with 91: 81: 71: 61: 51: 31: 26: 3279:SARS-related coronavirus 3242:Henipavirus encephalitis 3100:Murid gammaherpesvirus 4 2945:Viral hemorrhagic fevers 2726:Viral hemorrhagic fevers 2698:Arbovirus encephalitides 2674:Arbovirus encephalitides 2644:Viral hemorrhagic fevers 2609:Banna virus encephalitis 2509:Arbovirus encephalitides 2454:Viral hemorrhagic fevers 2420:Saint Louis encephalitis 2387:Arbovirus encephalitides 2338:Viral hemorrhagic fevers 2272:Arbovirus encephalitides 2069:(CDC). 17 December 2018. 657:Livingston, West Lothian 468:Ochlerotatus sollicitans 209: 204: 3383:Yaba monkey tumor virus 2740:Kyasanur Forest disease 2702:Tick-borne encephalitis 2403:Australian encephalitis 2296:California encephalitis 1168:Kane T (27 July 2012). 1016:. 85–2198 (2198): 178. 630:Cape Cod, Massachusetts 473:Ochlerotatus canadensis 463:Ochlerotatus canadensis 443:bridge vectors include 120:African trypanosomiasis 2730:Omsk hemorrhagic fever 2311:La Crosse encephalitis 2038:ceh.vetmed.ucdavis.edu 839:(USDA). 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Archived from 1142:The Boston Globe 1132: 1126: 1125: 1121:The Boston Globe 1111: 1105: 1104: 1102: 1100: 1085: 1079: 1078: 1076: 1074: 1059: 1050: 1049: 1011: 1003: 997: 996: 994: 992: 977: 971: 970: 960: 928: 922: 921: 911: 887: 881: 880: 878: 876: 862: 856: 855: 853: 851: 845: 830: 822: 816: 815: 809: 801: 799: 797: 782: 734: 727: 723: 720: 714: 691: 683: 596: 589: 585: 582: 576: 552: 551: 544: 437: 434: 261: 260: 228: 214: 213: 47: 46: 24: 23: 16:Species of virus 3689: 3688: 3684: 3683: 3682: 3680: 3679: 3678: 3639:Animal vaccines 3624: 3623: 3622: 3610: 3600: 3598: 3590: 3588: 3583: 3575: 3570: 3562: 3557: 3549: 3544: 3536: 3531: 3523: 3518: 3509: 3508: 3503: 3494: 3493: 3488: 3475: 3465: 3452: 3432: 3397: 3387: 3362: 3332: 3306: 3295: 3258: 3233:Paramyxoviridae 3226: 3179: 3116: 3105: 3083: 3014: 2925: 2914: 2899: 2879: 2863:Pappataci fever 2856:Oropouche virus 2851:Oropouche fever 2825: 2814: 2784: 2764: 2682: 2654:Heartland virus 2624: 2613: 2593: 2565:Pogosta disease 2493: 2440:West Nile fever 2371: 2252: 2241: 2234: 2221: 2191: 2186: 2185: 2125: 2104: 2101: 2091: 2061: 2058: 2056:Further reading 2053: 2052: 2042: 2040: 2030: 2026: 2014: 2010: 2009: 2005: 1995: 1993: 1984: 1983: 1979: 1972:BBC News Online 1966: 1965: 1961: 1951: 1949: 1941: 1940: 1936: 1926: 1924: 1916: 1915: 1911: 1901: 1899: 1891: 1890: 1886: 1876: 1874: 1865: 1864: 1860: 1853: 1849: 1839: 1837: 1828: 1827: 1823: 1813: 1811: 1803: 1802: 1798: 1788: 1786: 1777: 1776: 1772: 1762: 1760: 1751: 1750: 1746: 1736: 1734: 1719: 1715: 1705: 1703: 1692: 1691: 1687: 1677: 1675: 1660: 1659: 1650: 1640: 1638: 1628: 1624: 1614: 1612: 1597: 1596: 1592: 1582: 1580: 1565: 1561: 1551: 1549: 1534: 1530: 1520: 1518: 1505: 1504: 1500: 1490: 1488: 1473: 1469: 1459: 1457: 1442: 1438: 1428: 1426: 1411: 1404: 1394: 1392: 1382: 1378: 1368: 1366: 1351: 1342: 1332: 1330: 1320: 1316: 1306: 1304: 1294: 1290: 1280: 1278: 1266: 1262: 1252: 1250: 1245: 1244: 1240: 1230: 1228: 1223: 1222: 1218: 1208: 1206: 1189: 1185: 1166: 1162: 1152: 1150: 1133: 1129: 1112: 1108: 1098: 1096: 1087: 1086: 1082: 1072: 1070: 1061: 1060: 1053: 1004: 1000: 990: 988: 979: 978: 974: 929: 925: 902:(26): 1867–74. 896:N. Engl. J. Med 888: 884: 874: 872: 864: 863: 859: 849: 847: 843: 828: 824: 823: 819: 803: 802: 795: 793: 784: 783: 768: 763: 747: 735: 724: 718: 715: 704: 692: 681: 665: 653: 606: 597: 586: 580: 577: 566: 553: 549: 542: 526:anticonvulsants 522:corticosteroids 509: 485: 429: 392: 372: 332:Martellivirales 308:Kitrinoviricota 255: 212: 207: 166: 41: 22: 17: 12: 11: 5: 3687: 3677: 3676: 3671: 3666: 3661: 3659:Horse diseases 3656: 3651: 3646: 3641: 3636: 3621: 3620: 3608: 3585: 3584: 3582: 3581: 3568: 3555: 3542: 3529: 3516: 3501: 3485: 3483: 3477: 3476: 3462: 3461: 3458: 3457: 3454: 3453: 3451: 3450: 3444: 3442: 3434: 3433: 3431: 3430: 3425: 3424: 3423: 3412: 3410: 3399: 3393: 3392: 3389: 3388: 3386: 3385: 3380: 3374: 3372: 3364: 3363: 3361: 3360: 3355: 3350: 3344: 3342: 3334: 3333: 3331: 3330: 3322: 3320: 3309: 3301: 3300: 3297: 3296: 3294: 3293: 3292: 3291: 3286: 3276: 3270: 3268: 3260: 3259: 3257: 3256: 3255: 3254: 3249: 3238: 3236: 3228: 3227: 3225: 3224: 3219: 3218: 3217: 3212: 3207: 3202: 3191: 3189: 3181: 3180: 3178: 3177: 3176: 3175: 3170: 3160: 3159: 3158: 3153: 3148: 3143: 3132: 3130: 3119: 3111: 3110: 3107: 3106: 3104: 3103: 3095: 3093: 3085: 3084: 3082: 3081: 3080: 3079: 3074: 3064: 3063: 3062: 3057: 3052: 3047: 3042: 3037: 3026: 3024: 3016: 3015: 3013: 3012: 3007: 3002: 3001: 3000: 2992: 2991: 2990: 2980: 2979: 2978: 2968: 2967: 2966: 2958: 2957: 2956: 2941: 2939: 2928: 2917: 2909: 2908: 2905: 2904: 2901: 2900: 2898: 2897: 2891: 2889: 2881: 2880: 2878: 2877: 2872: 2871: 2870: 2860: 2859: 2858: 2848: 2841: 2839: 2828: 2820: 2819: 2816: 2815: 2813: 2812: 2807: 2806: 2805: 2796: 2794: 2786: 2785: 2783: 2782: 2776: 2774: 2766: 2765: 2763: 2762: 2761: 2760: 2752: 2751: 2750: 2745: 2737: 2736: 2735: 2723: 2722: 2721: 2711: 2710: 2709: 2694: 2692: 2684: 2683: 2681: 2680: 2671: 2666: 2656: 2651: 2640: 2638: 2627: 2619: 2618: 2615: 2614: 2612: 2611: 2605: 2603: 2595: 2594: 2592: 2591: 2586: 2585: 2584: 2574: 2573: 2572: 2562: 2561: 2560: 2552: 2551: 2550: 2540: 2539: 2538: 2530: 2529: 2528: 2520: 2519: 2518: 2505: 2503: 2495: 2494: 2492: 2491: 2490: 2489: 2479: 2478: 2477: 2467: 2466: 2465: 2450: 2449: 2448: 2447: 2437: 2436: 2435: 2427: 2426: 2425: 2417: 2416: 2415: 2410: 2400: 2399: 2398: 2383: 2381: 2373: 2372: 2370: 2369: 2368: 2367: 2359: 2358: 2357: 2349: 2348: 2347: 2334: 2333: 2328: 2327: 2326: 2318: 2317: 2316: 2308: 2303: 2302: 2301: 2293: 2292: 2291: 2283: 2282: 2281: 2268: 2266: 2255: 2244: 2236: 2235: 2227:viral diseases 2220: 2219: 2212: 2205: 2197: 2188: 2187: 2184: 2183: 2172: 2157: 2142: 2126: 2121: 2120: 2118: 2117:Classification 2111: 2110: 2100: 2099:External links 2097: 2096: 2095: 2090:978-0716704911 2089: 2071: 2057: 2054: 2051: 2050: 2024: 2003: 1977: 1959: 1934: 1909: 1884: 1858: 1847: 1821: 1796: 1770: 1744: 1713: 1685: 1648: 1622: 1590: 1559: 1528: 1498: 1467: 1436: 1402: 1376: 1340: 1314: 1288: 1260: 1238: 1216: 1183: 1160: 1127: 1106: 1080: 1051: 998: 972: 943:(2): 1014–25. 923: 882: 870:Florida Health 857: 817: 765: 764: 762: 759: 746: 743: 737: 736: 695: 693: 686: 680: 677: 664: 661: 652: 649: 605: 602: 599: 598: 581:September 2019 563:of the subject 561:worldwide view 556: 554: 547: 541: 538: 508: 505: 484: 481: 391: 388: 374: 373: 366: 364: 360: 359: 352: 348: 347: 340: 336: 335: 328: 324: 323: 316: 312: 311: 304: 300: 299: 292: 288: 287: 280: 273: 272: 267: 263: 262: 249: 248: 245:salivary gland 230: 229: 221: 220: 211: 208: 206: 203: 165: 162: 99: 98: 95: 89: 88: 85: 79: 78: 75: 69: 68: 63: 59: 58: 55: 49: 48: 35: 29: 28: 20: 15: 9: 6: 4: 3: 2: 3686: 3675: 3672: 3670: 3667: 3665: 3662: 3660: 3657: 3655: 3654:Bird diseases 3652: 3650: 3647: 3645: 3642: 3640: 3637: 3635: 3632: 3631: 3629: 3619: 3614: 3609: 3607: 3597: 3596: 3593: 3578: 3573: 3569: 3565: 3560: 3556: 3552: 3547: 3543: 3539: 3534: 3530: 3526: 3521: 3517: 3512: 3506: 3502: 3497: 3491: 3487: 3486: 3484: 3482: 3478: 3474: 3469: 3449: 3446: 3445: 3443: 3441: 3440: 3435: 3429: 3426: 3422: 3419: 3418: 3417: 3414: 3413: 3411: 3409: 3408: 3407:Rhabdoviridae 3403: 3400: 3394: 3384: 3381: 3379: 3376: 3375: 3373: 3371: 3370: 3365: 3359: 3356: 3354: 3351: 3349: 3346: 3345: 3343: 3341: 3340: 3335: 3329: 3328: 3324: 3323: 3321: 3319: 3318: 3317:Herpesviridae 3313: 3310: 3308: 3302: 3290: 3287: 3285: 3282: 3281: 3280: 3277: 3275: 3272: 3271: 3269: 3267: 3266: 3265:Coronaviridae 3261: 3253: 3250: 3248: 3245: 3244: 3243: 3240: 3239: 3237: 3235: 3234: 3229: 3223: 3220: 3216: 3213: 3211: 3208: 3206: 3203: 3201: 3198: 3197: 3196: 3193: 3192: 3190: 3188: 3187: 3186:Rhabdoviridae 3182: 3174: 3171: 3169: 3166: 3165: 3164: 3161: 3157: 3154: 3152: 3149: 3147: 3144: 3142: 3139: 3138: 3137: 3134: 3133: 3131: 3129: 3128: 3123: 3120: 3118: 3112: 3102: 3101: 3097: 3096: 3094: 3092: 3091: 3090:Herpesviridae 3086: 3078: 3075: 3073: 3070: 3069: 3068: 3065: 3061: 3058: 3056: 3053: 3051: 3048: 3046: 3043: 3041: 3038: 3036: 3033: 3032: 3031: 3028: 3027: 3025: 3023: 3022: 3017: 3011: 3008: 3006: 3003: 2998: 2997: 2996: 2993: 2989: 2986: 2985: 2984: 2981: 2977: 2974: 2973: 2972: 2969: 2964: 2963: 2962: 2959: 2955: 2952: 2951: 2950: 2946: 2943: 2942: 2940: 2938: 2937: 2932: 2929: 2927: 2921: 2918: 2916: 2910: 2896: 2893: 2892: 2890: 2888: 2887: 2886:Rhabdoviridae 2882: 2876: 2873: 2869: 2868:Toscana virus 2866: 2865: 2864: 2861: 2857: 2854: 2853: 2852: 2849: 2846: 2843: 2842: 2840: 2838: 2837: 2832: 2829: 2827: 2821: 2811: 2808: 2803: 2802: 2801: 2798: 2797: 2795: 2793: 2792: 2787: 2781: 2780:Bourbon virus 2778: 2777: 2775: 2773: 2772: 2767: 2758: 2757: 2756: 2753: 2749: 2746: 2743: 2742: 2741: 2738: 2733: 2732: 2731: 2727: 2724: 2720: 2717: 2716: 2715: 2712: 2708: 2705: 2704: 2703: 2699: 2696: 2695: 2693: 2691: 2690: 2685: 2679: 2675: 2672: 2670: 2667: 2664: 2660: 2657: 2655: 2652: 2649: 2645: 2642: 2641: 2639: 2637: 2636: 2631: 2628: 2626: 2620: 2610: 2607: 2606: 2604: 2602: 2601: 2596: 2590: 2587: 2583: 2580: 2579: 2578: 2575: 2571: 2570:Sindbis virus 2568: 2567: 2566: 2563: 2558: 2557: 2556: 2553: 2549: 2546: 2545: 2544: 2541: 2536: 2535: 2534: 2531: 2526: 2525: 2524: 2521: 2516: 2515: 2514: 2510: 2507: 2506: 2504: 2502: 2501: 2496: 2488: 2485: 2484: 2483: 2480: 2476: 2473: 2472: 2471: 2468: 2464: 2461: 2460: 2459: 2455: 2452: 2451: 2446: 2443: 2442: 2441: 2438: 2433: 2432: 2431: 2428: 2423: 2422: 2421: 2418: 2414: 2411: 2409: 2406: 2405: 2404: 2401: 2397: 2394: 2393: 2392: 2388: 2385: 2384: 2382: 2380: 2379: 2374: 2365: 2364: 2363: 2360: 2355: 2354: 2353: 2350: 2345: 2344: 2343: 2339: 2336: 2335: 2332: 2329: 2324: 2323: 2322: 2319: 2314: 2313: 2312: 2309: 2307: 2304: 2299: 2298: 2297: 2294: 2289: 2288: 2287: 2284: 2279: 2278: 2277: 2273: 2270: 2269: 2267: 2265: 2264: 2259: 2256: 2254: 2248: 2245: 2243: 2237: 2232: 2228: 2225: 2218: 2213: 2211: 2206: 2204: 2199: 2198: 2195: 2182: 2178: 2177: 2173: 2171: 2167: 2166: 2162: 2158: 2156: 2152: 2151: 2147: 2143: 2141: 2137: 2136: 2132: 2128: 2127: 2124: 2119: 2115: 2107: 2106:"Togaviridae" 2103: 2102: 2092: 2086: 2081: 2080: 2072: 2068: 2064: 2060: 2059: 2039: 2035: 2028: 2021:. 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Index

Specialty
Infectious diseases
Edit this on Wikidata
Symptoms
Risk factors
Diagnostic method
Prognosis
African trypanosomiasis
zoonotic
Togavirus
Massachusetts
horses
viral encephalitis
Epizootics
Venezuelan equine encephalitis virus
western equine encephalitis virus
fever
muscle pain
altered mental status
headache
meningeal
photophobia
seizures
mosquito
Colourised TEM micrograph of a mosquito salivary gland: The virus particles (virions) are coloured red. (83,900x magnification)
TEM
micrograph
mosquito
salivary gland
Virus classification

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