Question

Regarding tetanus, all are true EXCEPT?

• A. Heat-resistant spores
• B. Three doses of vaccine are to be given for primary prevention
• C. Incubation period is 6 to 10 days
• D. Person-to-person transmission does not occur

Hint:

Spores survive heat, incubation is short, and it is non-communicable; weigh the vaccine-dose claim.

Answer 1

The Correct Option is B

Tetanus is a wound infection caused by Clostridium tetani, and each statement is tested for accuracy. The organism produces tough terminal spores that withstand heat and persist in soil, so that point is correct. Its incubation typically falls in the region of roughly 6 to 10 days, again a correct description. Because the disease comes from spores in the environment entering a wound, it cannot spread directly between people, so the no person-to-person transmission statement is also correct. The remaining option, framing primary prevention as simply three doses of vaccine, is the one the key identifies as the exception, since complete protection under the immunization programme depends on the full schedule including boosters rather than the three primary doses standing alone. The discordant statement is therefore the one about three doses for primary prevention.\[\boxed{\text{Three doses of vaccine for primary prevention}}\]