Department of Health warns of rabies, West Nile virus

CASPER (WNE) — The Wyoming Department of Health is warning residents about rabies and West Nile virus as both threats increase this summer.

In two recent news releases, the department said activity for both diseases typically rises in warmer months.

Health officials also confirmed the first rabies case of 2026: a bat found in a Sheridan County backyard tested positive for the virus.

Rabies is not spread through casual contact, feces, or urine. According to the news release, it is transmitted through bites or scratches from an infected animal.

"Rabies is a fatal but preventable disease," Dr. Emily Curren, a state public health veterinarian with the WDH, said. "Anyone with potential exposure to a rabid animal should wash the wound thoroughly with warm water and soap, and seek medical advice about the need for rabies post exposure prophylaxis (PEP) treatment."

Health officials warn residents not to touch or feed wild or stray animals; treat animal bites with soap and water, and contact a medical professional immediately. They also advise people who find a bat in their home to contact a medical professional immediately.

Dogs, cats, ferrets, horses and other selected livestock should be vaccinated for rabies.

Officials are also warning about West Nile virus this summer. The virus is spread through mosquito bites.

The department tracks mosquito pool testing and cases of West Nile virus in all counties across the state. Since Sept. 4, 2025, there have been 11 reported cases of West Nile. Of those 11 cases, six were severe, and one was fatal.  

The department recommends the following: 

• Drain standing water.
• Control mosquito larvae.
• Use window screens.
• Keep lawns trimmed and weed-free.
• Use insect repellent.
• Wear long-sleeved shirts and pants.
• Avoid exposure to mosquitos during dusk and dawn.

West Nile virus can range in severity. Many infections are mild and go unreported, according to the news release. In severe cases, it can cause serious, and sometimes fatal, neurological complications.

This story was published on June 9, 2026. 

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