So far this year, WNV was detected in 41 dead birds. This
is a smaller number of WNV-positive birds so far than we
had last year. (Note: Two WNV-positive birds
near each other in Santa Clarita look like just one red
star on the map).
Cases of WNV infection in birds and people tend to be highest in the late summer, but may
be happen at other times.
WNV is transmitted to humans, horses, and
birds by the bites of infected mosquitoes. Testing dead
wild birds for WNV provides a way
tracking the virus in our environment. Veterinary Public
Health works with the California Department of Public
Health and local mosquito control agencies in conducting
WNV surveillance in Los Angeles County.
As always, thanks to Los Angeles County residents,
Animal Control Agencies, and vector Control Agencies for
you assistance with WNV surveillance.
To report a dead
bird or tree squirrel in Los Angeles County, click
read more about WNV in humans, click