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Preliminary Maps & Data for 2016

As of September 20, 2016, a total of 46 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes in 2016. Overall, 868 cases of West Nile virus disease in people have been reported to CDC. Of these, 448 (52%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 420 (48%) were classified as non-neuroinvasive disease.

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