There were more than 800 human cases of West Nile virus throughout the state in 2014, the second-highest year on record to date, the state Department of Public Health announced Wednesday.
Mosquitoes are making their presence felt in the Bay Area almost a month ahead of schedule. The mixed weather has some experts warning it could signal an early start to West Nile virus season.
The West Nile virus has been discovered in a dead bird and pool of mosquitoes at Clay Park in South San Francisco, and at the Bruno Canziani park area in Livermore.
A group of mosquitoes and several dead birds found throughout Contra Costa County have tested positive for the West Nile virus in recent weeks, Contra Costa County Mosquito and Vector Control District officials said Tuesday.
Mosquitoes have tested positive for West Nile Virus in San Jose, according to South Bay officials.
A Marin County resident has tested positive for the West Nile virus, marking the first case detected in a person in the county this year, health officials said Friday.
Two crows located in Contra Costa County tested positive for the West Nile virus Tuesday, according to the Contra Costa Mosquito and Vector Control District.
There have been 19 cases of West Nile virus in the state this year, including Santa Clara and Contra Costa counties. The San Francisco Health Department is now asking the public’s help in preventing the spread of mosquitoes that may carry the virus. Nader Shatara, the head of Vector Control for the San Francisco Health Department, said residents should beware of standing water where mosquitoes breed.
Vector control crews plan to spray chemicals in West San Jose Tuesday night to curb spread of the West Nile virus.