Acute Communicable
Disease Control

Contact Information
County of Los Angeles
Department of Public Health
Acute Communicable Disease Control
313 N. Figueroa Street, #212
Los Angeles, CA 90012
Phone: (213) 240-7941
Fax: (213) 482-4856

Call 211 For Information 24/7

Have questions about things like where to go for vaccinations or other health care services?

Call 2-1-1.

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West Nile Virus Environmental Surveillance in Los Angeles County

The Los Angeles County Department of Public Health conducts a range of environmental surveillance projects to further our understanding of local West Nile virus (WNV) activity.
dead birds flyer
Bird Surveillance

Bird Surveillance:
West Nile infected dead birds are indicators of the virus presence. In 2004, viral positive dead birds were recovered from nearly all areas of Los Angeles County. Since then, collection, testing, and documentation of WNV positive dead birds have been ongoing. To learn what type of birds to report see our flyer. Please report dead birds to the State of California's West Nile Virus program at 1-877-WNV-BIRD (1-877-968-2473) or by the Internet. See the most up-to-date map of WNV positive dead bird data in Los Angeles County HERE.

Report Dead Birds/Reporte Pajaros Muertos: 1-877-WNV-BIRD (1-877-968-2473) or by the Internet  Flyer

Mosquito Surveillance

Mosquito Surveillance:
Like infected dead birds, mosquito surveillance programs operated by Mosquito Abatement Districts statewide help identify the WNV transmission cycle before human cases occur. Mosquito pools comprising of 10 to 50 mosquitoes are trapped and tested for the presence of several mosquito-borne viruses including WNV.  For the most up-to-date map of WNV positive activity, click here.

Reporting Mosquito Breeding Sites and Areas With Water Accumulation

Acute Communicable Disease Control is responsible for monitoring and addressing human health problems in Los Angeles County, but is not directly involved with mosquito control activities. This important action is under the control of the county’s five independent mosquito control (abatement) districts. Beyond our county, the Health Departments of Long Beach and Pasadena also operate their own mosquito control programs.

To report a potential mosquito breeding situation: please contact the appropriate Mosquito Abatement District or city public health department:

Antelope Valley
(661) 942-2917
Greater Los Angeles
(562) 944-9656
L.A. County West
(310) 915-7370
City of Long Beach
(562) 570-4132
Compton Creek
(310) 933-5321
San Gabriel Valley
(626) 814-9466
City of Pasadena
(626) 744-6005
Orange County
(714) 971-2421

Additional information is available at

Find your Mosquito Abatement District by zip code here

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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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