The restaurant mistakenly used oil infused with THC, a psychoactive ingredient found in many cannabis products, in food preparation last year, the C.D.C. said.
Federal health officials warn of the possibility of “mass THC intoxication events” from food, in a report that explored how at least 85 people were sickened last year after eating at a restaurant that mistakenly used THC-infused oil to prepare dough.
The report, which was released on Thursday by the Centers for Disease Control and Prevention, documented cases that surfaced after patrons ate at the restaurant, Famous Yeti’s Pizza, in Stoughton, Wis.
From Oct. 22 to Oct. 24 last year, dozens of people, up to 91 years old, experienced symptoms that included dizziness, sleepiness and anxiety, after eating pizza, garlic bread, cheese bread and sandwiches at Famous Yeti’s, the C.D.C. said.
The restaurant is in a building that shares a commercial kitchen with other businesses, including a state-licensed vendor that makes edible THC products.