West Nile Virus Activity — United States, 2007
West Nile virus (WNV) is the leading cause of arboviral encephalitis in the United States. Originally identified in Africa in 1937, WNV was first detected in the western hemisphere in 1999 in New York City. Since then, WNV has caused seasonal epidemics of febrile illness and neurologic disease in th...
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Veröffentlicht in: | MMWR. Morbidity and mortality weekly report 2008-07, Vol.57 (26), p.720-723 |
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