Fresno County mosquitoes test positive for West Nile Virus

FRESNO COUNTY, California - Some mosquitoes in Fresno County tested positive for West Nile Virus.

The Fresno County Department of Public Health has been notified by the California Department of Public Health that two Culex mosquito pools for the virus.

Please contact the local mosquito abatement district for any concerns about mosquitoes in your area. For a list of services in your area, go to

To reduce the risk of being bitten by mosquitoes, the Fresno County Department of Public Health says to take the following precautions:

  • Apply insect repellents that contain DEET, picaridin, oil of lemon eucalyptus or IR 3535 according to label instructions.
  • Use repellent, especially in the early morning and in the evening, when mosquitoes that carry WNV are most active.
  • Make sure that doors and windows have tight-fitting screens to keep out mosquitoes. Repair or replace screens that have holes.
  • Eliminate standing water and containers that can hold water from around the home.
  • Contact mosquito abatement districts to report poorly maintained swimming pools or water features that appear green. Neglected pools are the # 1 source of mosquito breeding in residential areas.
  • Get FREE mosquito fish for backyard ponds or horse troughs from mosquito abatement districts. Contact your local mosquito abatement district for information.
  • Report dead birds and dead tree squirrels.

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