West Nile virus activity--United States, June 23-29, 2004
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Updated: Aug 23, 2026

Detection of Infectious Virus from Field-collected Mosquitoes by Vero Cell Culture Assay
Published on: June 9, 2011
Abstract:
As of June 29, eight states had reported a total of 57 human cases of West Nile virus (WNV) illness to CDC through ArboNET in 2004. A total of 38 cases had been reported from Arizona, 10 from California, three from New Mexico, two from Florida, and one each from Michigan, Nebraska, South Dakota, and Wyoming. Thirty-six (64%) of the cases occurred in males; the median age of patients was 53 years (range: 9-84 years), and dates of illness onset ranged from April 23 to June 15. Of the 57 cases, one fatal case was reported from Arizona.
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