West Nile Virus has now been detected in mosquitoes in both Lee & Collier Counties. Mosquitoes become infected with the virus when they feed on birds that have it, and it can be spread to humans through the bite of an infected mosquito. Both Lee and Collier Counties have robust mosquito control operations to protect human health, and human standard of living. And they have extensive monitoring operations to try and stay ahead of the flying pests, and track the presence of viruses like West Nile, Dengue, Eastern Equine Encephalitis, Chikungunya, and Zika.