A person after 6 hr. of consuming rice pudding in restaurant develops vomiting. True statements regarding food poisoning-: (A) Caused by staphylococcus aureus, (B) Preformed toxin, (C) Caused by vibrio parahaemolyticus, (D) Heat labile toxin
Answer is B. Ans. is 'b' i.e., Preformed toxin . Vomiting within 6 hours of ingestion of rice suggests the diagnosis of emetic type of food poisoning caused by B. cereus. . It caused by preformed heat stable enterotoxin. . In emetic form, B. cereus is not found in large numbers in fecal specimens. Therefore food sample is more useful.