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Discussion

Killed corpuscular vaccines contain

  • A.attenuated bacteria
  • B.immunogenic component of the bacteria
  • C.inactivated bacteria
  • D.inactivated toxin

Answer: C

Correct answer: inactivated bacteria

A killed corpuscular vaccine contains whole bacteria inactivated by heat or chemicals. Nothing multiplies, so it is safe and stable but generally needs a larger dose and booster injections. The old typhoid, cholera and whooping cough vaccines were of this kind.

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