CD News Alert

A case of measles has been confirmed in a child who returned at the end of November after international travel. Potential exposures may have occurred in the following situations...

The OC Health Care Agency (HCA) recently identified the first case of Trichophyton mentagrophytes (TMVII) in Orange County. TMVII is a recently emerged cause of dermatophyte (e.g...

The OC Health Care Agency (HCA) was notified of seven confirmed cases of Legionnaire’s Disease (LD) among residents living in a community in a northwestern corner of Westminster...

This alert aims to raise awareness of current guidance around the prevention and treatment of respiratory pathogens as we begin the 2024-2025 respiratory virus season. In addition...

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

Mpox infections, from Clade II Monkeypox virus, continue to be endemic in the United States. Orange County has had an increase in mpox cases over the summer. Orange County Pride...

In 2024, Orange County has already identified 25 cases of dengue virus infection. This exceeds the number of county residents identified with dengue virus infection in any year...

On August 23, 2024, the Food and Drug Administration (FDA) approved and authorized the 2024-2025 Moderna and Pfizer-BioNTech COVID-19 vaccines. The FDA reported that doses would...

A resident of Huntington Beach has tested positive for West Nile Virus (WNV) infection, becoming the first human WNV case in Orange County this year. In 2023, Orange County had...