California is part of a coalition made up of western states that have established its own COVID-19 guidelines.

Last year’s flu season was the worst California had seen in years — and state health officials warn this year could ...

The CDC is now recommending that children under the age of 4 no longer get a combination vaccine that protects against four ...

Health officials in Los Angeles County said on Friday they are investigating a possible local spread of a more severe strain ...

With three new cases of a more severe mpox strain detected in Southern California, here's what to know about symptoms, where ...

Health officials in Southern California are investigating the spread of a new strain of the Monkeypox virus after three cases were reported last week in the region.

California, Hawaii, Oregon and Washington on Wednesday issued unified recommendations on COVID-19, influenza and RSV vaccines that differ from those issued by the U.S. Centers for Disease Control and ...

As California health officials investigate an outbreak of a more severe type of mpox virus, federal data indicate that across ...

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

Gov. Gavin Newsom and 14 other Democratic governors are banding together as experts grow increasingly concerned about the ...

As the CDC rolls back MMRV and COVID-19 vaccine guidelines, San Luis Obispo County doctors are navigating a challenging ...