Final 2004
West Nile Virus Activity in the United States
This map reflects surveillance findings occurring between January 1, 2004 through December 31, 2004 as reported to CDC's ArboNET system for public distribution by state and local health departments. *Currently, West Nile virus maps are updated regularly to reflect surveillance reports released by state and local health departments to CDC's ArboNET system for public distribution. Map shows the distribution of avian, animal, or mosquito infection occurring during 2004 with number of human cases if any, by state. If West Nile virus infection is reported to CDC from any area of a state, that entire state is shaded.
Data table: Human cases
have been reported in: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, District
of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Jersey, New Mexico, New York, North Carolina, North
Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, South
Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Wisconsin, and Wyoming. USGS: http://diseasemaps.usgs.gov/ For information on WNV activity in Canada please see:
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