A type of bacteria found in meat and pre-cooked food left at unsafe temperatures was responsible for sickening hundreds of people who ate at a Chipotle restaurant in Ohio, local health officials said on Thursday.
The outbreak last month was the latest in a series of food safety lapses at the burrito chain, and health officials said it was caused by the clostridium perfringens bacterium, which often infects food that is prepared in large quantities and kept warm for a long time.