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CAHAN Disease Notification - Increase of Measles in California

Key Messages An increase in measles cases has been confirmed in California in recent weeks, with six cases being reported in the last week. Two of those cases were among Orange County residents. Health care providers should consider measles in persons presenting with a fever, rash, and other symptoms consistent...

Confirmed Measles Case Visited Orange County While Infectious

Community urged to ensure immunity (Santa Ana, CA) – The OC Health Care Agency (HCA) received notification of a confirmed case of measles who visited Orange County (OC). While infectious, this individual visited the following OC locations: Thursday, 1/22/26 Disneyland Park, 8 a.m. to 4 p.m. Disney California Adventure Park...

CD HEALTH ALERT: Infectious Measles Case Visits Orange County

The OC Health Care Agency (HCA) received notification of a confirmed case of measles who visited Orange County (OC). While infectious, this individual visited the following OC locations: Disneyland Park, Thursday, January 22 from 8:00 a.m. to 4:00 p.m. Disney California Adventure Park, January 22 from 3:00 p.m. to closing...

CAHAN Disease Notification - Update on Bicillin® L-A (penicillin G benzathine injectable suspension) Shortage: Inventory Review and Clinical Guidance

Key Messages: Pfizer recently updated ( PDF ) the estimated recovery of the Bicillin L-A shortage to the 4th Quarter of 2026. The next delivery of Bicillin® L-A 1.2 MU and 2.4 MU prefilled syringes is anticipated to be July 2026; the next delivery of the pediatric 600,000 Units prefilled...

CAHAN Disease Notification - CDPH Recommends Immunizing Infants with RSV Monoclonal Antibodies through April 2026, Given Ongoing RSV Disease Activity

Key Messages Respiratory Syncytial Virus (RSV) transmission is continuing in California. CDPH recommends continuing RSV immunization of eligible infants and young children with RSV monoclonal antibody products through April 30, 2026. As of 3/7/2026, percent positivity for RSV in Orange County continues to increase week over week. This health alert...

Together, We Can Prevent Measles in Orange County

Measles is the most contagious diseases known—but the good news is that it is preventable. In response to recent cases reported in Orange County and across the region, the OC Health Care Agency (HCA) encourages both health care providers and community members to take simple, proactive steps to stay protected...

Tuberculosis is Curable

March 24 marks World TB Day (WTD) - a day that commemorates Dr. Robert Koch’s 1882 discovery of the tuberculosis (TB) bacterium. At that time, TB was raging through Europe and the Americas, claiming the lives of one out of every seven people. Today, WTD reminds us that tuberculosis remains...