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Unformatted text preview: • A reservoir host is a wild host population in which the virus can multiply • Reservoir Hosts • Wild birds, such as crows • Migratory birds distribute and re-introduce West Nile virus into areas • Role of other vertebrates not known. V West Nile Fever: US Outbreak • Early August 1999: • Die-offs of crows in areas surrounding Bronx Zoo • Late August 1999: • Human encephalitis in New York City and surrounding areas • Horse deaths in Long Island • Death of zoo birds: Flamingos, cormorants, bald eagle, snowy owl H West Nile Virus Spread V Human Cases: 2002 H To avoid WNV, avoid mosquitoes, by same methods as presented for encephalitis 2003: 9862 cases, 264 deaths 2004: 2151 cases, 68 deaths (as of Oct 2004)...
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- Spring '07
- West Nile Virus, West Nile Fever, Western equine encephalitis, west nile