West Nile Virus

West Nile virus (WNV) was first isolated from a patient in the West Nile district of Uganda in 1937. Several outbreaks of WNV occurred in the Mediterranean Basin (an area stretching from Portugal to Jordan and Italy to Cape Verde) in the 1950s and 1960s. The United States' first WNV cases occurred in New York in 1999. North Dakota's first case was reported in August 2002. Human cases have been reported in the state every year since then.


Current Statewide Data


2017 West Nile Virus Samples and Testing
Beginning: June 1, 2017
Through: September 15, 2017
 Positive to Date
Humans57
Horses1
Dead Birds11
Mosquito Pools16
Other Veterinary0

Historical Data