Incidence by county map data description: West Nile virus neuroinvasive disease incidence maps reflect surveillance reports released by state and local health departments to CDC's ArboNET system for public distribution. Map shows the incidence of human neuroinvasive disease (encephalitis, and/or meningitis, and/or acute flaccid paralysis) by county for 2011 with shading ranging from .01-.99, 1.0-2.49, 2.50-9.99, and greater than 10.0 per 100,000 population.
Counties from the following states have reported neuroinvasive disease cases to CDC ArboNET: Alabama, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, DC, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, Rhode Island, Tennessee, Texas, Utah, Vermont, Virginia, West Virginia, Wisconsin, and Wyoming.
WNV Surveillance Maps Detailing Neuroinvasive Disease Incidence Additional Years:
For archived surveillance pages please visit the West Nile virus surveillance archives