Over the past month, influenza test positivity has steadily increased. Emergency department visits for influenza and RSV are also increasing. Although hospital admissions for these...

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to inform clinicians and health departments about a new outbreak of...

This advisory is being issued in response to the recent update to Title 17 of the California Code of Regulations, which now designates silicosis as a reportable disease. As of July...

The California Department of Public Health (CDPH), the Center for Disease Control and Prevent (CDC) and multiple other states continue to investigate a large, multi-state outbreak...

The California Department of Public Health is working with other state health departments and the U.S. Centers for Disease Control and Prevention to investigate a multistate...

An individual in their 80s confirmed positive for West Nile Virus (WNV), becoming the first human WNV infection in Orange County this year. In 2024, Orange County had one WNV human...

The California Department of Public Health (CDPH) would like to alert healthcare providers, local health jurisdictions and laboratories about three unrelated clade I mpox cases...

A case of measles has been confirmed in an Orange County resident, an unvaccinated toddler, who had recently traveled domestically. The Orange County Health Care Agency's...

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory about a new outbreak of Ebola virus disease (EVD) in the Democratic...