Body Key Messages: Multiple detections of West Nile Virus (WNV)-positive mosquitoes in Orange County and a much higher-than-usual number of human WNV cases in California to date signal...

Body A case of measles has been confirmed in a pediatric patient residing in Orange County. The case was infectious while they traveled arriving at LAX 7/16/2026 after living abroad...

Body Centers for Disease Control and Prevention (CDC) released a Health Advisory to raise awareness of cyclosporiasis due to a large increase in domestically acquired disease in...

Body There has been an increase in travel-related introductions of clade I mpox into California and the U.S. in 2026, and clade II mpox cases have increased in California. Increases in...

Body Key Messages A large influx of domestic and international travelers is expected into Southern California from June through July 2026, with highest concentration anticipated between...

Body Health Advisory: Information on Methyl Methacrylate (MMA) A hazardous materials incident in Garden Grove has led to mandatory evacuation orders due to the potential release of... Links in this section relate to Body

Body Key Messages On May 15, 2026, the Democratic Republic of Congo and the Republic of Uganda officially declared an outbreak of Bundibugyo virus disease (BVD), a type of Ebola disease...

Body The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Advisory to alert clinicians, public health practitioners, and travelers...

Body The Centers for Disease Control and Prevention (CDC) is issuing this Health Alert Network (HAN) Health Update to inform clinicians and health departments about testing available...