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  9. Q55

BPSC (Bihar PCS) 2023 · Question 55 of 150

How do COVID vaccines stimulate an immune response?

General Science

  1. ABy introducing antibodies against SARS-CoV-2 virus
  2. BBy introducing live attenuated SARS-CoV-2 virusCorrect
  3. CBy introducing a real SARS-CoV-2 virus
  4. DBy introducing a harmless piece of SARS-CoV-2 virus

Answer: B. By introducing live attenuated SARS-CoV-2 virus

Explanation

Immune responses are stimulated by introducing live, attenuated pathogen; WHO-recommended SARS-CoV-2 vaccines are mRNA and vector types.

Source: 69th BPSC Prelims 2023 (Set B)

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