Question

Polio, diphtheria and tetanus have been controlled to a great extent by

• A. Spraying of insecticides in ditches, drainage and swamps
• B. Avoiding stagnant water in an around residential areas
• C. Introducing insectivorous fishes like Gambusia in ponds
• D. Vaccines and immunization programmes

Answer 1

The correct option is D Vaccines and immunization programmes

Poliomyelitis (Polio) vaccines are both orally administered, live attenuated polio vaccines (OPV) and inactivated polio vaccines (IPV) for intramuscular (or subcutaneous) injection are widely used internationally. There are four combination vaccines used to prevent diphtheria, tetanus, and pertussis ( whooping cough): DTaP, Tdap, DT, and Td. Two of these (DTaP and DT) are given to children younger than seven years of age, and two (Tdap and Td) are given to older children and adults.

So, the correct answer is option D.