AMES, Iowa [KCCI-TV]  — Mosquitoes found in traps at an Ames park have tested positive for the West Nile Virus.

The city of Ames says the traps were at Emma McCarthy Lee Park, and the park is sprayed or fogged for mosquitoes every Wednesday evening, weather pending. No humans are reported to have tested positive for the virus.

The virus doesn’t cause any symptoms in most people but has been linked to other deadly conditions.