Vaccines and their role · NCERT Biology

Which type of vaccine carries the lowest risk of causing the disease it is meant to prevent, even in immunocompromised individuals?

  1. Live-attenuated viral vaccine
  2. Inactivated/Killed vaccine
  3. Sabin oral polio vaccine
  4. MMR measles-mumps-rubella vaccine
Show answer and explanation

Correct answer: Inactivated/Killed vaccine

Inactivated (killed) vaccines use pathogens that have been completely killed by heat or chemicals. Since the pathogen cannot replicate, there is zero risk of reversion to a virulent form, making them safe even for immunocompromised individuals.

Difficulty: Medium Question 10 of 20

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