Preliminary Maps & Data for 2017
CDC-USGS Disease Maps
As of January 9, 2018, a total of 47 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes in 2017. Overall, 2,002 cases of West Nile virus disease in people have been reported to CDC. Of these, 1,339 (67%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 663 (33%) were classified as non-neuroinvasive disease.
- Page last reviewed: January 10, 2018
- Page last updated: January 10, 2018
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