General Information

Contact Dept

  • Phone:
    (559) 600-3200
  • Address:
    1221 Fulton Mall
    Fresno, CA 93721
  • Email Department

a summary
Last Updated by Russell Bevill
  West Nile Virus
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West Nile virus (WNV) is a mosquito-borne disease first detected in the United States in 1999. WNV first appeared in California in 2003 and by 2004, WNV had spread to all 58 counties.

Helpful hints to reduce the risk of West Nile Virus, click here.

July 16, 2012

 First 2012 West Nile Virus Positive Human Cases in Fresno County 

  West Nile Virus Information

West Nile Virus Annual Report 2011

Information for Medical Providers

General Information

News Releases

For more information about WNV or to report dead birds, visit the California Department of Public Health website at
or call 1-877-WNV-BIRD.

  Other Resources

Center for Disease Control - West Nile Virus

California Department of Public Health - West Nile Virus

California Vectorborne Disease Surveillance System (Arboviruses)

Fresno County Environmental Health Vector Control