(Las Vegas, NV) — The Southern Nevada Health District has reported a case of West Nile Virus.

Mosquitoes have been reported positive in the 89107 zip code, but no humans have been contracted to this point. The humid conditions are partly to blame and according to Devin Barrett with the Southern Nevada Health District, there are precautions that can be taken.

“Avoid outdoor activity during dusk and dawn because that is the prime feeding hours. Also, keep any screens and doors repaired and closed.” Barrett added that standing water should be eliminated in and around your property.

The virus is spread through the insects, not by people. The symptoms include fever, headache, nausea and vomiting.

In 2011, there were 11 cases of West Nile Virus in Clark County.