Five birds with WNV were discovered before the start of May, according to the county Department of Environmental Health.
The total of 29 for the year is the highest in the state. The county didn't find 29 WNV-positive birds last year until late October.
"These are signs that 2015 might be another tough year in our county for West Nile virus, so people should remember to protect themselves and their families," said DEH Director Elizabeth Pozzebon. "Get rid of standing water around properties where mosquitoes can breed, wear insect repellent when outdoors and report dead birds."
Last year, 11 San Diegans contracted WNV and two died. In a recent prior years, no local cases were reported.
Statewide, more than 800 people were diagnosed with the virus in 2014 and 31 died. No one has caught the illness in California this year, according to state health officials.
West Nile virus is spread to birds and humans by mosquitoes, and the county has an eradication program in place. Residents are also encouraged to help out by dumping water out of outdoor pots and saucers, wheelbarrows, old tires and rain gutters.
Four out of five people bitten by a mosquito carrying WNV won't have symptoms. Of those who do get sick, most will have a mild headache, fever, nausea, skin rash or swollen glands.
The symptoms turn life-threatening in one out of 150 cases, mainly for people over 50 years old or those with weakened immune systems.
Authorities Wednesday released an artist's rendering of a man who attacked a 63-year-old pedestrian without provocation in Alpine two months ago, leaving her with a broken nose and numerous cuts, scrapes and bruises.
City crews Wednesday removed a plaque referencing Jefferson Davis, former president of the Confederacy, from Horton Plaza Park in downtown San Diego.
A 79-year-old man with Parkinson's disease who went missing in Chula Vista has been found, authorities said Wednesday.
Former NFL quarterback and Washington State star Ryan Leaf is joining SiriusXM's for regular talk show appearances on the satellite radio's college sports channel.
Stone Brewing Co., the 9th-largest craft beer company in the United States, can finally exercise its 21st Amendment right. That’s right.
An Oceanside man cleaning his handgun in an upstairs apartment accidentally fired the weapon, sending a bullet into the apartment below and critically injuring a woman, police said Wednesday.
An Escondido father shot a man Wednesday morning who tried to break into the home where he, his wife and two teenage daughters were sleeping, authorities said.
Light rain may be in store for the morning commute Wednesday in San Diego as a deep marine layer along the coast continues to pull temperatures below average for this time of year.
With just a week to go, many people across the U.S. are buzzing about the "Great American Eclipse."