The Wyoming Department of Health Reminds People to Prevent Mosquito Bites This Summer

Cheyenne, WY - June 1, 2026.  The Wyoming Department of Health (WDH) is reminding residents to protect themselves from mosquito bites as we move into warmer months to prevent West Nile Virus (WNV) infection. 

“Even if you don’t get bitten by mosquitoes often, one bite can still put you at risk of WNV infection,” said Courtney Tillman, Epidemiologist at the WDH. “It’s important that we all take steps to prevent mosquito bites and WNV infection.”

To protect yourself and your loved ones:

• When spending time outdoors, use insect repellents approved by the Environmental Protection Agency that contain DEET, picaridin, Oil of Lemon Eucalyptus, or IR3535. Always follow label instructions.

• Wear loose-fitting long-sleeved shirts and pants while outdoors. 

• Avoid outdoor activities during dawn and dusk, when mosquitoes that spread WNV are most active. 
• Use tightly fitted screens on windows to keep mosquitoes out. 
• Remove standing water around your home to prevent mosquitoes from breeding.
• Use larvicides, such as Bacillus thuringiensis israelensis, in water that does not drain, including ornamental ponds and water features. Always follow product instructions. 

Most people infected with WNV show no symptoms. Approximately one in five people will have mild symptoms, like fever, headache, and body aches. In rare cases, severe illness or death can occur, particularly in those over the age of 55 or with chronic health conditions.

Information from the WDH about WNV can be found at badskeeter.org.