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CAHAN Disease Notification – New World Screwworm Outbreak in Mexico and Central America

CDPH/Health Advisory– September 4, 2025 – The California Department of Public Health (CDPH) would like to alert healthcare providers, local health departments, laboratories, and...

CAHAN Disease Notification – Suspect Measles? Isolate, Report to Local Public Health and Test

CDPH/Health Advisory- March 25, 2025 - Multiple measles cases have been confirmed in California in recent weeks. All cases have been linked to international travel, reflecting a...

OCHCA: Nitrous Oxide Information and Survey

On March 14, 2025, the Food and Drug Administration (FDA) issued a Consumer Advisory advising consumers not to inhale nitrous oxide products from any size canisters, tanks, or...

CDC HAN 523: Ongoing Risk of Dengue Virus Infections and Updated Testing Recommendations in the United States

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Update to provide additional information to healthcare providers, public...

Epi-X Notification - Adverse Events Following Receipt of Injectable Ceftriaxone

The Centers for Disease Control and Prevention (CDC), in collaboration with state and local health departments, is investigating reports of serious adverse events, including deaths...

CAHAN Disease Notification - Marburg virus disease in Tanzania and Ebola disease outbreak in Uganda

The California Department of Public Health (CDPH) is closely monitoring an Ebola disease outbreak in Uganda caused by Sudan virus and a Marburg Virus Disease (MVD) outbreak in...

CD HEALTH ALERT: Risk of Highly Pathogenic Avian Influenza (HPAI) Influenza A (H5N1) in Cats and Raw Pet Food

Two Orange County cats have been diagnosed with presumptive HPAI influenza A (H5N1). These animals reportedly consumed raw pet food sold at a farmers’ market. No transmission to...

CD HEALTH ALERT: HIV, Syphilis and Hepatitis C Among People Experiencing Homelessness in Orange County

People experiencing homelessness (PEH) are at increased risk for HIV and hepatitis C. The vast majority of recent HIV cases among PEH in Orange County have been co-infected with...

CAHAN Disease Notification – Accelerated Subtyping of Influenza A in Hospitalized Patients

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to clinicians and laboratories due to sporadic human infections with...