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Preliminary Maps & Data for 2015

As of November 17, 2015, a total of 48 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes in 2015. Overall, 1,812 cases of West Nile virus disease in people have been reported to CDC. Of these, 1,181 (65%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 631 (35%) were classified as non-neuroinvasive disease.