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Preliminary Maps & Data for 2018

As of November 13, 2018, a total of 49 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes in 2018. Overall, 2,323 cases of West Nile virus disease in people have been reported to CDC. Of these, 1,428 (61%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 895 (39%) were classified as non-neuroinvasive disease.