Preliminary Maps & Data for 2019

As of April 30, 2020, a total of 47 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes in 2019. Overall, 958 cases of West Nile virus disease in people have been reported to CDC. Of these, 626 (65%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 332 (35%) were classified as non-neuroinvasive disease.