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Preliminary Maps & Data for 2014

As of January 13, 2015, a total of 47 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes in 2014. Overall, 2,122 cases of West Nile virus disease in people have been reported to CDC. Of these, 1,283 (60%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 839 (40%) were classified as non-neuroinvasive disease.

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