Two dead birds tested positive for the virus recently. They were found in Stevenson Ranch and Silver Lake, according to the L.A. County Vector Control.
Officials say the best way to avoid contracting the virus is to get rid of standing water, where the pests breed. The virus, which is transmitted by mosquitoes, has no cure and usually does not cause serious illness.
Officials urge anyone who finds a dead bird to call (877) WNV-BIRD or report it through http://www.westnile.ca.gov/.