By NewsDesk  @infectiousdiseasenews

The Colorado Department of Public Health and Environment (CDPHE) is reporting West Nile virus (WNV) in humans in Colorado for the first time this season–one case in Larimer County and the other case is from Delta County.


Both cases have survived and are recovering from their illnesses at the time of the investigation. West Nile virus is most commonly spread to people by the bite of an infected mosquito.

“There are simple precautions people can take to protect themselves from West Nile virus,” said Dr. Jennifer House, deputy state epidemiologist and public health veterinarian. “Use an effective insect repellent, wear protective clothing, or stay indoors when mosquitoes are active, and mosquito-proof your home.”

In Colorado, most human West Nile virus cases are reported in August and September.

In 2020, Colorado had 35 reported human cases of West Nile virus, including one death.

Most people infected with West Nile virus don’t have symptoms. About 20% of infected people will have flu-like symptoms, and fewer than 1% develop a serious, potentially deadly illness. People over age 60 and those with certain medical conditions are at greater risk of serious illness.