West Nile virus (WNV) is a disease caused by the bites of infected mosquitoes. The virus survives in nature in several types of birds and is transmitted by the bites of mosquitoes that feed on infected birds. WNV spreads during warm weather months when mosquitoes are most active. While not all mosquitoes carry this virus, the type of mosquito that spreads this virus is found throughout Los Angeles County.

Having problems with mosquitoes? Contact information is available HERE.

SIGN UP: To receive the free weekly emailed West Nile Virus and Other Arboviral Diseases Report (published during WNV season) email "Subscribe WNV" to ACDC2@ph.lacounty.gov.