Skip to main content

West Nile Virus Statistics

The disease surveillance program serves as an early warning system in the detection of mosquito-borne viruses that can infect people and animals.

The District uses the following factors to assess health risk in your community:

  • Higher-than-average daily temperatures
  • Mosquito Population Monitoring – Using traps set up in every community
  • Mosquito Testing for Diseases
  • Dead Birds – A CA state program: Dead birds help determine spread of West Nile virus
  • Sentinel Chickens – Chickens develop antibodies to West Nile virus, which can be detected by testing.

Using these measurements, the District is able to protect your health by responding appropriately to mosquito-borne disease threats.


Year-to-Date Statistics for 2021

2021 WNV+ Mosquito Samples

There are currently no positive mosquito samples within our jurisdiction. 


2021 WNV+ Dead Birds

There are currently no positive dead birds within our jurisdiction.