- Gram ⊕ rod. Spores are heat-stable.- Grows in heated food that cools down too slowly or is improperly refrigerated (also known as reheated rice syndrome).- Keeping rice warm results in germination of spores and enterotoxin formation.

- Causes food poisoning.

- Emetic type usually seen with rice and pasta. Nausea and vomiting within 1-5 hours.- Caused by cereulide, a preformed toxin.- Diarrheal type causes watery, nonbloody diarrhea and GI pain within 8-18 hours.