Bacillus cereus is an example of what type of foodborne illness?

Bacillus cereus is an example of what type of foodborne illness?

• A. Bacillus cereus is an example of foodborne intoxication.
• B. It is an example of foodborne infection.
• C. It is a virus.
• D. It is a chemical contaminant.

Answer: (A)

This item tests understanding of the difference between foodborne intoxication and infection. Bacillus cereus causes illness by producing toxins in food that are ingested preformed, leading to symptoms without the bacteria needing to invade the intestinal lining. This toxin-mediated illness is why it’s classified as a foodborne intoxication. It is not a virus, and it’s not a chemical contaminant. In practice, the emetic form often causes vomiting within about 1–6 hours after ingestion, while the diarrheal form causes diarrhea and abdominal cramps within roughly 6–24 hours.

This item tests understanding of the difference between foodborne intoxication and infection. Bacillus cereus causes illness by producing toxins in food that are ingested preformed, leading to symptoms without the bacteria needing to invade the intestinal lining. This toxin-mediated illness is why it’s classified as a foodborne intoxication. It is not a virus, and it’s not a chemical contaminant. In practice, the emetic form often causes vomiting within about 1–6 hours after ingestion, while the diarrheal form causes diarrhea and abdominal cramps within roughly 6–24 hours.