Question

Mass vaccination is ineffective in which of the following?

• A. Measles
• B. Polio
• C. Tetanus
• D. None

Hint:

Think Pulse Polio, measles catch-up rounds and tetanus toxoid campaigns.

Answer 1

The Correct Option is D

Step 1: Mass vaccination means immunising a large proportion of a population over a short period to rapidly raise herd immunity and interrupt transmission.

Step 2: Measles is highly contagious and human-only, so mass campaigns (pulse and catch-up rounds) are a proven tool to push coverage above the herd-immunity threshold and stop outbreaks.

Step 3: Polio is the classic example. Pulse polio immunisation, a mass-vaccination strategy with oral polio vaccine on national immunisation days, is exactly how India drove polio toward elimination.

Step 4: Tetanus is also tackled through mass approaches, such as mass campaigns of tetanus toxoid to women of child-bearing age to eliminate maternal and neonatal tetanus.

Step 5: Since mass vaccination is effective and actually used in all three diseases listed, the correct answer is None.