West Nile Virus


West Nile virus (WNV), is a disease transmitted to humans, birds, horses, and other animals, by infected mosquitoes. Mosquitoes get the disease from feeding on infected birds and can later pass it on when they bite animals or humans.

WNV is established in San Diego County and can be found in all 58 counties in California! The virus was first isolated in the West Nile district of a Northern Province in Uganda in 1937. It was first detected in the United States in New York City in 1999. From there, the virus spread westward, arriving in California in 2003. West Nile virus is now the most prevalent mosquito-borne disease in the United States.

The Vector Control Program protects communities and the environment by controlling mosquitoes that can transmit diseases to humans.

Click below to report: 

      A Dead Bird       Mosquito Breeding      A Green Swimming Pool


What's New

Current West Nile virus Statistics

Number of Birds Infected with West Nile Virus Tops 2014

More West Nile Virus Infected Mosquitoes Found

Numbers of Dead Birds Testing Positive for West Nile Virus Rising

Fighting the Bite from the Air

SD Swat Team Kid's Page - NEW GAMES

Vector Habitat Remediation Program

State of California WNV webpage


General Information         

Report Dead Birds WNV History
Report Green Swimming Pools Frequently Asked Questions
Report Mosquito Breeding Clinical Information
Mosquito Fish Distribution Locations Horse Information
  EPA Information on Insect Repellents
WNV Activity Updates      Prevention                                       
WNV Cases in San Diego County Mosquito Prevention
Aerial Larvicide Application Green Swimming Pools
  Mosquito Fish




Pamphlet Library "Go Blue, Not Green!" Video
Request Educational Materials "Stop West Nile Virus" Video Part 1
Request a Presentation "Stop West Nile Virus" Video Part 2
Geocaching "Local WNV Survivor Story"
  "Lucha Contra la Picadura del Zancudo" Video
  QR Codes
Team Fight the Bite Geocaches  


Other Languages          

Español                  Cambodian
Francais                 Laos
Tagalog                  Chinese
Russian                  Tiêng Viêt  
Português              Somali


For More Information On 
WNV Or Other Vectors Contact: 
(858) 694-2888  
SD Fight the Bite Homepage