The year’s first human case of West Nile virus in La Plata County has been reported to San Juan Basin Public Health.

West Nile virus is a mosquito-borne illness that can cause fever, nausea, headache and muscle aches. In rare instances, the virus can cause encephalitis and meningitis and be fatal. Anyone with West Nile virus symptoms should see a health care provider.

Most people infected with mosquito-borne viruses don’t get sick. However, those who do contract the viruses start experiencing symptoms two to 14 days after getting a mosquito bite, according to the health department.

People older than age 60 are most at risk for serious illness or disease from the virus.

Preventing mosquito bites is the best way to avoid a mosquito-borne illness.

“Use an effective insect repellent, wear protective clothing or stay indoors when mosquitoes are active, and mosquito-proof your home,” Jennifer House, state public health veterinarian, said in a news release.

Residents can take these steps to protect themselves:

Use insect repellent containing deet.Drain standing water around your home.Be careful during outdoor activities at dawn and dusk, when mosquitoes are most active.Dress in long sleeves and pants where mosquitoes are active.For a list of insect repellents approved by the Environmental Protection Agency, visit epa.gov/insect-repellents.

For more information, visit cdc.gov/westnile/prevention.

mshinn@durangoherald.com