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.


Yearly Summary (2008-2017)

Note: Human cases reported by Los Angeles County Department of Public Health


Year-to-Date Statistics for 2018

WNV+ = Number of West Nile virus positive samples confirmed

 

  • City or Community
  • WNV+
  • Arleta
  • 2
  • Burbank
  • 1
  • Cerritos
  • 1
  • Chatsworth
  • 1
  • Diamond Bar
  • 1
  • Encino
  • 9
  • Glendale
  • 1
  • Hawaiian Gardens
  • 1
  • La Mirada
  • 1
  • Los Feliz
  • 1
  • Montebello
  • 3
  • North Hills
  • 2
  • North Hollywood
  • 3
  • Northridge
  • 5
  • Panorama City
  • 3
  • Porter Ranch
  • 3
  • Reseda
  • 2
  • San Pedro
  • 1
  • Santa Fe Springs
  • 1
  • Sherman Oaks
  • 5
  • Studio City
  • 2
  • Sunland
  • 1
  • Sun Valley
  • 2
  • Sylmar
  • 1
  • Valley Glen
  • 2
  • Valley Village
  • 1
  • Van Nuys
  • 7
  • West Hills
  • 1
  • Winnetka
  • 1
  •  
  • WNV+ total: 65
  • City or Community
  • WNV+
  • Glendale
  • 1
  • North Hollywood
  • 1
  • Sherman Oaks
  • 3
  • Sunland
  • 1
  • Sun Valley
  • 1
  • Sylmar
  • 1
  • Tarzana
  • 1
  •  
  • WNV+ total: 9
  • City or Community
  • Date of 1st Detection
  • Number of WNV+
  • Encino
  • 8/6/18
  • 5
  •  
  •  
  • Number of WNV+ total: 5