Vibrio Cholerae
Vibrio cholerae is commonly associated with contaminated seafood and causes profuse watery diarrhea.
What our notes say
- Vibrio cholerae is commonly associated with contaminated seafood and causes profuse watery diarrhea. (Medical Bacteriology and Entomology)
- *Shigella sonnei* has the lowest ID50 (as few as 10–100 organisms can cause disease) — this is the correct answer whenever compared against *Salmonella typhi, Vibrio cholerae, Campylobacter jejuni* (Streptococcus Classification, S. pyogenes, Rheumatic Fever, AGN)
- *Explanation:* Vibrio cholerae is endemic to specific regions with poor sanitation and contaminated water sources. (Mbmm3311 – Medical Bacteriology)
- *Explanation:* The characteristic "rice-water" appearance of profuse watery diarrhea without fever is pathognomonic for cholera caused by Vibrio cholerae. (Mbmm3311 – Medical Bacteriology)
- HELAZIA is the only species that is transmitted biologically by flies. *Vibrio cholerae*, *E. coli*, *Salmonella typhi*, *Proteus* are transmitted mechanically (Medical Entomology Past Paper MCQs)
- B) Cholera toxin is attached to the flagella of *Vibrio cholerae* (Medical Bacteriology and Entomology MCQs)
Study material on Vibrio Cholerae
- Medical Bacteriology Examination MCQs
- Medical Bacteriology and Entomology MCQs
- Streptococcus Classification, S. pyogenes, Rheumatic Fever, AGN
- Mbmm3311 – Medical Bacteriology
- Paediatrics end of 2nd semester exam (MBPE 4300): 5 October 2021, 50 MCQs
- Medical Bacteriology and Entomology
Practice questions on Vibrio Cholerae
Features of Vibrio cholerae infection include
- Predominantly invasive infection
- Increased absorption of sodium
- Increased absorption of bicarbonate
- Release of chloride ions into lumen after opening of CFTR
Answer: D. Cholera toxin causes excessive chloride ion release into the lumen via CFTR, leading to massive fluid loss. ---
The first microorganism to satisfy Koch's postulates (in the late 19th century) was Vibrio cholerae, responsible for cholera.
- A) Vibrio cholerae
- B) Bacillus anthracis
- C) Mycobacterium tuberculosis
- D) Staphylococcus aureus
Answer: A. Robert Koch successfully applied his postulates to demonstrate that Vibrio cholerae was the causative agent of cholera. This was a landmark achievement in microbiology and epidemiology.