What food is Bacillus cereus commonly associated with?

• A. Cooked rice
• B. Fresh spinach
• C. Raw milk
• D. Boiled potatoes

Answer: (A)

Bacillus cereus is a spore-forming bacterium that can survive cooking and produce toxins if the food is allowed to sit at room temperature or be kept warm for too long. The classic scenario is cooked rice, which is often prepared in large batches and may be held warm or left out, giving the bacteria a chance to germinate and generate toxins. This is why rice is most commonly linked to Bacillus cereus outbreaks, including the rapid emetic (vomiting) form and the diarrheal form. While other foods can carry various risks, cooked rice is the food most strongly associated with Bacillus cereus.