After the holiday season and an uptick in travel, California is seeing a rise in respiratory illnesses, prompting health experts to talk of a potential “quad-demic.” The term refers to the simultaneous spread of four major viruses: COVID-19,

The flu vaccine is generally about 40% effective at completely preventing influenza, according to Blumberg. The flu vaccine protects against three strains of influenza, including two influenza A strains. It also protects against influenza B, which typically shows up later in the season, Blumberg said.

The CASPER also found that just less than half of households reported having at least one health symptom caused by the cross-border sewage crisis, such as headaches, nausea and dry throat. Most with chronic conditions, such as allergies, migraines, asthma and lung pain, said their symptoms have worsened.

Flu season is here in California, but other illnesses are in full swing in the Golden State. Here are the symptoms and how long you're contagious.

On Thursday, the U.S. Centers for Disease Control and Prevention confirmed another case of avian influenza A(H5N1), or bird flu, in California, bringing the nationwide total of cases to 67. California has been hit hardest,

The CDC has confirmed a positive bird flu case in a child in San Francisco, the second juvenile case of H5N1 in the country.

A child in San Francisco who had red eyes and a fever had a probable case of H5N1 bird flu, according to the city’s Department of Public Health.

The Los Angeles fires continue to cause devastation across the state as evacuation shelters have been hit with a highly contagious virus.

A fire at the world’s largest battery storage plant in Northern California smoldered Friday after sending plumes of toxic smoke into the atmosphere,

The former Red Sox catcher was in Boston recently for Fenway Fest. He talked of his career and bond with teammates like Luis Tiant, and shared insights on today's game.