Culex Genus Mosquitoes Are the Main WNV Vector

There are hundreds of species of mosquitoes in the U.S., most of which are not infected with West Nile virus. Among those that are, the ones belonging to the genus Culex are considered to be the most important vectors.

A map of the United States. Solid blue marks areas with Culex tarsalis. Polka dots mark areas with Culex pipiens. Stripes mark areas with Culex quinquefasciatus. Most of the country is blue except for the northeast corridor, mid-atlantic, and Michigan. The northern part of the country is covered with dots and the south is covered with stripes, with an area of overlap in between. — Culex genus mosquitoes in the U.S.

Geographic Distribution of Culex

Dr. Laura Kramer