California officials issue warning against foraging wild mushrooms following deadly poisoning outbreak

California health officials are urging the public to avoid collecting wild mushrooms following a series of poisonings that have resulted in one adult death and severe liver injury in multiple patients, including children. The state's poison control center has confirmed 21 incidents of amatoxin poisoning, likely caused by death cap mushrooms, according to a recent statement from the California Department of Public Health.

These toxic mushrooms are often confused with edible varieties due to their similar appearance and taste. Erica Pan, director of the California Department of Public Health, emphasized the danger: Death cap mushrooms carry potent toxins that can cause liver failure. Because they closely resemble safe mushrooms, we strongly advise against foraging during this high-risk season.

Among the affected, one adult has died, and several others have required intensive medical care, including at least one patient who may need a liver transplant.

Officials note that wet conditions promote the growth of death cap mushrooms, increasing the risk for anyone foraging. Illnesses have been reported in Monterey County after residents consumed mushrooms found in a local park. Additional cases have been reported in the San Francisco Bay Area, but authorities caution that the risk exists statewide.

In 2023, Americas Poison Centers documented over 4,500 exposures to unidentified mushrooms, with roughly half involving young children, who may accidentally ingest mushrooms while playing outdoors. Californias poison control system handles hundreds of wild mushroom poisoning cases annually.

Experts warn that both death cap and destroying angel mushrooms closely resemble edible mushrooms, making color or taste unreliable indicators of safety. Cooking or eating the mushrooms raw does not reduce the risk of poisoning.

Early symptoms of toxic mushroom ingestion can include stomach cramps, nausea, vomiting, and diarrhea within 24 hours. However, initial symptom relief does not guarantee safety, as severe complications like liver damage can appear later.

For guidance on identifying or treating mushroom poisoning, individuals are encouraged to contact the poison control hotline at 1-800-222-1222.

Author: Noah Whitman