Thirty-eight mosquito samples have tested positive for West Nile virus this season in Orange County, more than double that of ...

The first human case of West Nile virus in Long Beach and current mosquito-carrying activity in the San Gabriel Valley has ...

Add Yahoo as a preferred source to see more of our stories on Google. Crowds in the San Francisco Ferry Building on Saturday, March 7, 2026. A little-known respiratory virus, HMPV, is spreading in ...

Six mosquitoes and three dead birds tested positive for the virus, according to the Sacramento-Yolo Mosquito and Vector Control District.

Sacramento County confirmed its first human West Nile virus case of 2026. The patient, a woman in her 60s, is recovering, officials said.

A respiratory virus that doesn't have a vaccine or a specific treatment regimen is spreading in some parts of California—but there's no need to sound the alarm just yet, public health officials ...

Though it is commonly called the "winter vomiting disease," norovirus outbreaks are still cropping up around the country in late May.

A mosquito trapped in Newark has tested positive for West Nile virus, the first mosquito-borne sample of the virus detected in Bay Area this year.

West Nile virus has now been detected in mosquito samples from 13 Orange County cities, with Fullerton accounting for the ...