West Nile Virus Risk Factors
Risk factors for West Nile virus include:
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- Calisher CH. Medically important arboviruses of the United States and Canada. Clin Microbiol Rev. 1994 Jan;7(1):89-116. 
- Mackenzie JS, Gubler DJ, Petersen LR. Emerging flaviviruses: the spread and resurgence of Japanese encephalitis, West Nile and dengue viruses. Nat Med. 2004 Dec;10(12 Suppl):S98-109.