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 ...

The first vaccine-booking invitations for those at highest risk for severe outcomes from COVID-19 are being sent out this ...

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 ...

California's two most densely inhabited regions and its agricultural breadbasket will be under stay-at-home orders by Sunday night as the COVID-19 pandemic strains hospitals in the most populous U.S.

A deeply moving new exhibition at the Gustine Museum is ensuring that the ultimate sacrifice made by ten of the city's sons ...