Veterinary Public Health


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Veterinary Public Health Program
313 N Figueroa St. Rm 1127
Los Angeles, CA 90012
Tel (213) 989-7060
Tel: (877) 747-2243
Fax (213) 481-2375
vet@ph.lacounty.gov
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West Nile Virus (WNV) in Dead Birds - 2015

Did you know?crow

  • 62% of dead birds tested for WNV in Los Angeles County in 2015 were positive for the virus (103 out of 166)
  • WNV-positive birds were found across a wide area in Los Angeles County, with most being found on the west side, especially in Santa Monica (see map).
  • The WNV season extended primarily between August and December, as shown by the number of WNV-positive birds increasing and decreasing in those months, respectively (see graph).

What kinds of dead birds should I report for WNV testing?

Freshly dead crows, ravens, and birds of prey may be tested for WNV. 

How do I report a dead bird?

Click here to learn more about reporting a dead bird.

Why test dead birds for WNV?

Tracking WNV in dead birds helps show where the virus is most active in the county. It also helps show the start and end to the WNV season.

Where does this data come from?

Members of the public report dead birds to various agencies in LA County and in California. Each dead bird is tracked, even when they cannot be tested for WNV. The Veterinary Public Health Program graphs and maps the LA County data from all participating agencies and shares it on this page. The dead bird testing effort has been in operation since 2004, the year after the virus first appeared in LA County. It has helped reveal shifts in the environmental epidemiology of the virus over the years. Testing was significantly decreased in mid-2013, and began to increase again in 2015. A vibrant dead bird testing program is an essential part of tracking the virus in our environment in LA County.

Learn more about WNV

 

2015 WNV Map dead birds LA County

2015 graph WNV in dead birds by month

 

 

 

 

 

 

 

 

 

 

Last updated: September 18, 2017

   
 
Public Health has made reasonable efforts to provide accurate translation. However, no computerized translation is perfect and is not intended to replace traditional translation methods. If questions arise concerning the accuracy of the information, please refer to the English edition of the website, which is the official version.
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