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CAHAN Disease Notification - Increase in Global and Domestic Measles Cases and Outbreaks: Ensure Children in the United States and Those Traveling Internationally 6 Months and Older are Current on MMR

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to inform clinicians and public health officials of an increase in...

CAHAN Disease Notification – CDPH Health Advisory: Update on COVID-19 Medications and Transition to Commercial Marketplace

Once a high-risk individual is diagnosed with COVID-19, early treatment with antivirals is the best existing strategy to decrease the risk of serious illness and prevent...

CAHAN Disease Notification - Urgent Need to Increase Immunization Coverage for Influenza, COVID-19, and RSV Immunizations and Use of Authorized/Approved Therapeutics

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to alert healthcare providers to low vaccination rates against...

CAHAN Disease Notification - Severe and Fatal Confirmed Rocky Mountain Spotted Fever among People with Recent Travel to Tecate, Mexico

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to notify healthcare providers and the public about an outbreak of...

CAHAN Disease Notification - Mpox Caused by Human-to-Human Transmission of Monkeypox Virus with Geographic Spread in the Democratic Republic of the Congo

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

CD HEALTH ALERT: Increasing Respiratory Virus Activity in Orange County

For the last several weeks there has been increasing respiratory virus activity in Orange County. Rates of COVID-19, Respiratory Syncytial Virus (RSV), and Influenza disease are...

CAHAN - Limited Availability of Nirsevimab in the United States—Interim CDC Recommendations to Protect Infants from RSV during the 2023–2024 Respiratory Virus Season

The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to provide options for clinicians to protect infants from...

CD HEALTH ALERT: Recommendations for the Use of mRNA COVID-19 Vaccines (2023-2024 Formulations)

On September 11, 2023, the Food and Drug Administration (FDA) updated the emergency use authorizations (EUAs) for Moderna and Pfizer-BioNTech COVID-19 mRNA vaccines (2023-2024...

CD HEALTH ALERT: First Human West Nile Virus Case of the Season Reported in Orange County

Last week a woman in her 60s tested positive for West Nile Virus (WNV), becoming the first human WNV infection in Orange County this year, as compared to two cases at this time...