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Iowa Department of Health and Human Services

West Nile Virus


West Nile Virus (WNV) is transmitted by mosquitoes. People who are infected with WNV may not experience any signs or symptoms. Some people experience minor symptoms like fever and mild headache. Others, however, can develop a life-threatening illness that includes inflammation of the brain.

People who experience mild signs and symptoms of a WNV infection generally recover on their own. But severe illness that includes a severe headache, disorientation or sudden weakness require immediate medical attention.

Program Overview

In a joint effort with the State Hygienic Laboratory, the Iowa State University Department of Entomology, the Iowa Department of Agriculture and Land Stewardship, and several local health departments, the Iowa Department of Public Health has instituted a number of programs which have allowed Iowa to monitor West Nile virus activity in sentinel chickens, mosquitoes, horses, and humans.

General Public Information

Health Care Provider and Local Public Health Information

Educational Materials

Brochures and posters can be ordered for free by completing this form.

Fight the Bite Color Poster (11X17)Fight the Bite Poster 2

Fight the Bite Mosquito-Borne Diseases BrochureWest Nile Virus Brochure

Additional Links