West Nile Virus Activity --- United States, June 2--8, 2004
As of June 8, two states had reported a total of seven human cases of West Nile virus (WNV) illness to CDC through ArboNET. Six cases were reported from Arizona and one case from New Mexico (Figure). Four (57%) of the cases occurred in males; the median age of patients was 53 years (range: 22--69 years), and the dates of onset of illness ranged from May 9 to June 1.
In addition, during 2004, a total of 334 dead corvids and 55 other dead birds with WNV infection have been reported from 16 states, and seven WNV infections in horses have been reported from three states (Alabama, Arizona, and Texas). WNV seroconversions have been reported in 64 sentinel chicken flocks from four states (Arizona, California, Florida, and Louisiana), and 58 WNV-positive mosquito pools have been reported from six states (Arizona, California, Illinois, Indiana, Louisiana, and Pennsylvania).
Additional information about national WNV activity is available from CDC at http://www.cdc.gov/ncidod/dvbid/westnile/index.htm and at http://westnilemaps.usgs.gov.
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