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Preliminary Maps & Data for 2016

As of October 18, 2016, a total of 47 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes in 2016. Overall, 1,352 cases of West Nile virus disease in people have been reported to CDC. Of these, 693 (51%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 659 (49%) were classified as non-neuroinvasive disease.