A food item commonly associated with Bacillus cereus food poisoning is?

Appeared in: AIIMS BBSR SNO - 2019

Explanation

Fried rice is the classic food vehicle for the emetic (vomiting) type of Bacillus cereus food poisoning.
The bacterium's heat-resistant spores survive the initial boiling of rice.
If cooked rice is left at room temperature, the spores germinate, multiply, and produce a heat-stable toxin.
Reheating or frying the rice does not destroy this pre-formed toxin, leading to rapid onset of symptoms after consumption.

Option A: Honey is not the primary source for B. cereus. It is the classic vehicle for Clostridium botulinum spores.
Option B: Green beans are not a typical food associated with B. cereus outbreaks.
Option C: Baked potatoes are not a common source of B. cereus. They are more often linked to Clostridium botulinum.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Foodborne Illness and Microbiology as background academic context rather than a clinical decision trigger.
Nurses have a vital role in educating the public about food safety to prevent foodborne illnesses.
A key teaching point is the proper handling of cooked rice and other starchy foods: either keep them hot (above 60°C) or cool them rapidly (within 2 hours) and refrigerate (below 4°C).
What if? If a patient presented with neurological symptoms like double vision and descending paralysis after eating, the suspicion would shift from B. cereus to botulism, a medical emergency requiring immediate antitoxin administration, highlighting the importance of differential diagnosis based on symptoms.

How to Approach the Question

This is a factual recall question that tests your knowledge of microbiology and food safety.
First, identify the pathogen in the question stem: Bacillus cereus.
Recall the key characteristics and associations of this bacterium. A helpful mnemonic is that 'cereus' sounds like 'cereal,' pointing towards grain or starchy foods like rice.
Evaluate each option. Consider the most common and well-documented food association for B. cereus.
Eliminate other options by linking them to the pathogens they are more commonly associated with (e.g., Honey with C. botulinum).
Select 'Fried rice' as it is the textbook example for B. cereus food poisoning.

Concept Tested & Keywords

QD1PAYVoRrv_uO4vtHvrJU

E6 Parks TextBook of Preventive & Social Medicine part 1 — Subpart B (pp 202-403 of 604) pp. 95-97, 96-98

E6 Microbiology OneStop Sastry p. 80-82

Practise the full AIIMS BBSR SNO - 2019

Attempt every question from this paper in a timed mock, then review the full solution for each one.