Study of Bacillus cereus in Diarrhoeal Patients
Author Information
Author(s): Banerjee Mousumi, Nair Gopinath B., Ramamurthy Thandavarayan
Primary Institution: National Institute of Cholera & Enteric Diseases (ICMR), Kolkata, India
Hypothesis
To determine the occurrence of Bacillus cereus among diarrhoeal patients and its phenotypic and genetic characteristics.
Conclusion
Bacillus cereus was found in a small percentage of diarrhoeal patients, but several virulence factors were identified, indicating its potential role in diarrhoea.
Supporting Evidence
- B. cereus was identified in 54 (3.5%) of the 1536 diarrhoeal cases studied.
- 76% of the isolates exhibited haemolytic activity.
- Majority of the isolates were susceptible to many antibiotics but resistant to amoxyclav and cephalosporins.
- Distinct clonality was identified in the majority of the isolates.
Takeaway
This study looked at a type of bacteria called Bacillus cereus that can make people sick from food. They found it in some patients with diarrhoea and learned more about how it works.
Methodology
Stool specimens were collected from diarrhoeal patients, and B. cereus was identified using PCR and other assays.
Limitations
The study did not assess viral aetiology, which may affect the understanding of mixed infections.
Participant Demographics
54% of the patients were male, and the majority were under 60 years old.
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