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Which of the following regarding Clostridium tetani is false?

  • A.Soil, sand and the intestines of humans and animals are the reservoirs
  • B.Predominantly seen in dry and winter season
  • C.Transmission through contaminated wounds
  • D.No herd immunity is seen

Answer: B

Correct answer: Predominantly seen in dry and winter season

This is the false statement: tetanus is commoner in the warm, moist months, when soil contamination of wounds and agricultural injury are both more frequent. The other three are true - soil, dust and the intestines of humans and animals are the reservoirs, transmission is through contaminated wounds including trivial ones and the umbilical stump, and there is no herd immunity, since the disease is not transmitted person to person and every individual must be immunised in their own right.

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