CoV-2, the coronavirus behind the COVID-19 pandemic, constantly mutate. Since 2025, multiple new variants have emerged, each carrying different levels of risk and threat to people’s health.

Santa Cruz County officials are sounding the alarm after an invasive mosquito species capable of spreading dengue, Zika, and ...

What COVID trends are we seeing in Oklahoma? “Right now in Oklahoma, COVID is the predominant respiratory virus that's spreading around the state. When you compare it to RSV or influenza, right now ...

Santa Cruz County officials are sounding the alarm after an invasive mosquito species capable of spreading dengue, Zika, and ...

A Placer County man's death has been confirmed as the fifth in California in 2025 to be linked to West Nile virus, public ...

A small house and dock sit on a peninsula jutting into Three Mile Slough on the Sacramento-San Joaquin River Delta in this January 2021 photo. (Chris Marshall/Courthouse News) (CN) — The California ...

Many respiratory viruses ... can cause cold-like symptoms,” health officials say, but some are more dangerous than others.

California on Monday announced an app to help people track their exposure to the coronavirus, becoming the biggest U.S. state to take advantage of new technology from smartphone software makers Apple ...

Dr. Monica Gandhi, an infectious disease physician at UCSF, told SFGATE that most people end up with cases that are mild and ...

Last Tuesday, the California Legislature cast a vote on Gov. Gavin Newsom's controversial water tunnel project in the Sacramento-San Joaquin River Delta by not voting at all. A couple of bills meant ...

A Kings County resident has died from West Nile virus, the fourth in California this year, according to public health officials. The death is the second reported fatal case in the Central Valley ...