Which pathogenic bacterium is the causative agent of acute epidemic cholera transmitted through contaminated drinking water?
Answer and explanation
Correct answer: A. Vibrio cholerae
- Step 1: Vibrio cholerae is a comma-shaped, Gram-negative, facultative anaerobic bacterium. Step 2. It secretes an enterotoxin that hyperactivates adenylate cyclase in intestinal enterocytes, driving massive watery diarrhea. Answer: Vibrio cholerae. Why not the others: Salmonella typhi causes enteric typhoid fever; Shigella causes bacillary dysentery; Mycobacterium causes tuberculosis.
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