Vomiting and diarrhoea within hours of consuming contaminated food results from ingestion of preformed toxins; most often from which organism?

Vomiting and diarrhoea within hours of consuming contaminated food results from ingestion of preformed toxins; most often from which organism?

• A. Bacillus cereus
• B. Salmonella
• C. Vibrio cholerae
• D. Staphylococcus aureus

Answer: (D)

Rapid illness from preformed toxins in food happens because the toxin is already present when you eat. Staphylococcus aureus makes enterotoxins that are heat-stable and can survive cooking; when foods are mishandled and kept at room temperature, the toxin can form in the food and trigger symptoms within a few hours. The classic presentation is sudden vomiting, often within 1–6 hours, and diarrhea may accompany it. Among organisms known to produce such preformed toxins that lead to this quick gastroenteritis, Staphylococcus aureus is the most common cause. Bacillus cereus can cause a rapid vomiting illness as well, but overall Staphylococcus aureus is more frequently implicated. Salmonella and Vibrio cholerae cause illness through infection with live organisms and toxins formed after ingestion, with longer incubation and different symptom patterns, making them less likely explanations for this rapid, toxin-mediated presentation.

Rapid illness from preformed toxins in food happens because the toxin is already present when you eat. Staphylococcus aureus makes enterotoxins that are heat-stable and can survive cooking; when foods are mishandled and kept at room temperature, the toxin can form in the food and trigger symptoms within a few hours. The classic presentation is sudden vomiting, often within 1–6 hours, and diarrhea may accompany it. Among organisms known to produce such preformed toxins that lead to this quick gastroenteritis, Staphylococcus aureus is the most common cause. Bacillus cereus can cause a rapid vomiting illness as well, but overall Staphylococcus aureus is more frequently implicated. Salmonella and Vibrio cholerae cause illness through infection with live organisms and toxins formed after ingestion, with longer incubation and different symptom patterns, making them less likely explanations for this rapid, toxin-mediated presentation.