Kaiser Permanente healthcare workers in Northern California strike for better patient care and working conditions.

A second crow tested positive for West Nile virus in Walnut Creek, with increased mosquito breeding and WNV risk due to hot weather. Residents are urged to eliminate standing water and use repellent.

Contra Costa County confirms its first 2025 avian West Nile virus case in a California scrub jay, prompting community engagement and preventive measures.

Santa Clara County officials warn of measles exposure at local establishments and remind residents to check vaccination status and seek medical advice if exposed.

A child in California with a mild suspected case of H5N1 bird flu is recovering, with the risk of transmission deemed low by the CDC. No additional H5N1 cases were found in close contacts.

A child in Alameda County is being observed for a possible, but unlikely, bird flu infection with all close contacts testing negative, as public health officials remain vigilant.

Alameda County is launching the CARE Act Court to help individuals with severe mental health issues and substance disorders, providing them with tailored support services.

Walmart is fined $7.5 million for illegally disposing of hazardous waste in California, with the settlement demanding audits to ensure future compliance with state laws.

California's Alameda County, including Fremont, is in quarantine due to Medfly detection, with a response involving sterile fly releases and guidelines for local produce handling.

Wilma Chan Highland Hospital in Oakland is using its ER to initiate immediate treatment for opioid use disorder, aiding in California's broader adoption of emergency department-based interventions using buprenorphine.

Invasive Aedes aegypti mosquitoes, carriers of multiple viruses, were detected in North Concord, reigniting public health concerns, despite ongoing surveillance since their last sighting in Martinez two years ago.

Elevated lead levels are found in the drinking water at multiple Oakland schools, sparking health concerns and outrage over delayed action and communication.

Contra Costa Health advises indoor masking again due to the spread of the FLiRT COVID-19 variant. This is a precautionary recommendation, not a mandate.