Human Health and Diseases Question 68
68. A person likely to develop tetanus is immunised by administering
[2009]
(a) preformed antibodies
(b) wide spectrum antibiotics
(c) weakened germs
(d) dead germs
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Answer : c
Hints & Solutions
(c) Tetanus toxoid is a vaccine consisting of growth products of Clostridium tetani treated with formaldehyde serving as an active immunising agent. Hence it is weakened germs. The first tetanus toxoid (inactivated toxin) was produced in 1924 and was used successfully to prevent tetanus in the armed services during World War II. In the mid-1940s, tetanus vaccine was combined with diphtheria toxoid and inactivated pertussis vaccine to make the combination DTP vaccine for routine childhood immunization.
