A Laguna Beach woman is the first person to test positive for West Nile virus in Orange County this year, the county Health Care Agency said Friday.
A routine test at a blood bank last week revealed that the woman, who is in her 70s, is infected with the virus. She did not have any symptoms, according to the agency.
West Nile virus is most commonly spread through mosquitoes that contract the virus when they feed on infected birds. Mosquito bites can spread the illness to humans and animals.
It isn’t clear where or when the Laguna woman became infected. Her name was not disclosed.
Also on Friday, the city of Costa Mesa said a mosquito infected with West Nile...