Promoting and protecting the health and safety of all Idahoans

West Nile Virus: Fight the Bite


'Fight the Bite' logoWest Nile virus (WNV) is transmitted to people, birds and other animals by the bite of an infected mosquito. This virus can cause serious illness in people of any age, but especially in people over the age of 50 or those with other underlying medical conditions. You can protect yourself by avoiding mosquito bites. Taking the following precautions can help you "Fight the Bite." 

1.  Wear repellent containing DEET, Picaridin or Oil of Lemon Eucalyptus (all EPA-approved repellents) according to the label. 
2. Remove standing water around your home - this is where mosquitoes like to breed, and 
3.  Cover up your skin with clothing between dusk and dawn, when mosquitoes are most active.

Locally-acquired mosquitoborne transmission of WNV was first recorded in Idaho in 2004. In 2006, Idaho led the nation in reports of human illness associated with WNV with 996 cases being reported to the state health department. 

Mosquito pictureWest Nile virus is here to stay in Idaho.  The links to the right and below were selected to provide information about the disease and ways that you can protect yourself and your family.

          If you still have unanswered questions, please contact your Local Public Health Districts.

Governor Otter on Horse - Public Service Announcements link

 West Nile Virus Public Service Announcements 



Idaho Data

WNV infections occur during the summer months, coinciding with the presence of positive mosquitoes.

2020 Idaho WNV Data and Map

Archived data from 2003–2019




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