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Which among the following pathogens causes cholera?

  • A.Bacteria
  • B.Protozoan
  • C.Fungus
  • D.Virus

Answer: A

Correct answer: Bacteria

Cholera is caused by Vibrio cholerae, a comma-shaped bacterium spread through water contaminated with faeces. Its toxin makes the gut pour out water, and it is the resulting dehydration, not the organism itself, that kills - which is why oral rehydration is so effective.

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