Preliminary Maps & Data for 2017

CDC-USGS Disease Maps

Check out our Dynamic Map Viewer. Pan, zoom and view county arboviral case counts and incidence data

As of October 10, 2017, a total of 47 states and the District of Columbia have reported West Nile virus infections in people, birds, or mosquitoes in 2017. Overall, 1,295 cases of West Nile virus disease in people have been reported to CDC. Of these, 840 (65%) were classified as neuroinvasive disease (such as meningitis or encephalitis) and 455 (35%) were classified as non-neuroinvasive disease.

• West Nile Virus Disease Cases & Presumptive Viremic Blood Donors by State [Table]
• West Nile Virus Activity by State [Map]
• West Nile Virus Neuroinvasive Disease Incidence by State [Map]
• ArboNET County-level Data Presented on the U.S. Geologic Survey (USGS) Webpage [Maps]