The Health Department’s mosquito traps located in Sherrill Park and near Richardson ISD’s Professional Development Center returned mosquitoes this week that tested positive for carrying West Nile virus, the City’s first positive test results of 2024. The Department conducted ground spraying in that area Tuesday and Wednesday nights. No human cases of West Nile virus in Richardson have been reported.  

The City tests mosquito samples from traps throughout Richardson on a weekly basis from April-October. Residents are advised to follow The Four D’s of Protection against mosquito-borne illness to reduce mosquito populations and protect against bites:  

  • Drain standing water around the home  
  • Avoid being outdoors at dusk/dawn  
  • Dress to protect yourself with long sleeves and pants  
  • Apply insect repellent containing DEET or other effective repellants