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As of August 20, 2013, 43 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes. A total of 296 cases of West Nile virus disease in people, including 11 deaths, have been reported to CDC. Of these, 145 (49%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 151 (51%) were classified as non-neuroinvasive disease.
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