An unvaccinated O.C. toddler came down with measles with no known exposures
A case of measles has been confirmed in an Orange County resident, an unvaccinated toddler who by report has not traveled outside of the area or had known exposures. This…
A traveler with measles visited Disneyland, California Adventures and the Disneyland Hotel
(Santa Ana, CA) – The OC Health Care Agency (HCA) received notification from the California Department of Public Health (CDPH) and the Los Angeles Department of Public Health (LADPH) of a confirmed…
Measles case reported in south Orange County
(Santa Ana, CA) — The OC Health Care Agency (HCA) has confirmed a case of measles in a young adult who recently travelled internationally. The HCA is notifying individuals who were exposed to…
Bat with rabies found near an O.C. hiking trail
(Santa Ana, CA) – A bat in the City of Rancho Santa Margarita has tested positive for rabies. The bat was found near the gate entrance along the Mesa Trail at…
Disease
Federal Government
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Food & Health
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Orange County
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Santa Ana
ByHeart Baby Formula recalled due to risk of infant botulism
The California Department of Public Health (CDPH), in collaboration with the Centers for Disease Control and Prevention (CDC) and the U.S. Food and Drug Administration (FDA), has issued an urgent…
Anaheim senior hospitalized in O.C.’s first West Nile Virus case of 2025
(Santa Ana, CA) — An Anaheim resident over the age of 80 has tested positive for West Nile virus (WNV), marking the first confirmed human WNV case in Orange County…
A bat infected with rabies was found in Orange, across the street from CHOC
(Santa Ana, CA) — A bat found on the sidewalk of the west side of the 500 block of S. Main Street in Orange has tested positive for rabies, according to the…
Anaheim
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Garden Grove
Health and Medical
Huntington Beach
Insects
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Orange County Vector Control District
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Infected mosquitoes detected in north central Orange County
Garden Grove, Calif. – The Orange County Mosquito and Vector Control District (OCMVCD) has detected elevated West Nile Virus (WNV) activity in the Cities of Anaheim, Orange, Huntington Beach, Westminster,…
Measles case reported in Orange County
(Santa Ana, CA) — The OC Health Care Agency (HCA) has confirmed a case of measles in a toddler who recently travelled domestically. The HCA is notifying individuals who were…
O.C. Mosquito and Vector Control will spray mosquito-killing chemicals in Santa Ana from Sep. 10-12
Based on mosquito abundance and surveillance data, Orange County Mosquito and Vector Control District staff will conduct residential adult mosquito control in the City of Santa Ana on September 10th,…
First West Nile Virus positive mosquitoes confirmed in Santa Ana
The Orange County Mosquito and Vector Control District (OCMVCD) has confirmed that mosquitoes collected in the City of Santa Ana have tested positive for West Nile virus (WNV). These are…
O.C. Vector Control to spray toxic chemicals to kill mosquitoes in Santa Ana on August 6
The Orange County Vector Control District has announced upcoming mosquito control efforts to address an increase in mosquito abundance and the risk of mosquito-borne disease in the cities of Anaheim,…
First 2025 West Nile Virus positive mosquitoes confirmed in Orange County
The Orange County Mosquito and Vector Control District (OCMVCD) has confirmed that mosquitoes collected in the cities of Anaheim and Garden Grove have tested positive for West Nile virus (WNV).…
Dead bat found in South Orange County tested positive for rabies
(Santa Ana, CA) — A bat found at Rancho Santa Margarita Lake has tested positive for rabies. The bat was found on the ground near a walking path around the lake on Thursday,…
So. Cal. residents warned not to eat shellfish harvested in local coastal areas
The California Department of Public Health has issued an advisory warning not to consume all bivalve shellfish (mussel, oyster, clam, scallop) recreationally harvested from the coast of San Diego to…