69th BPSC Prelims (2023), question 18

🔬 Science & Technology

  1. How do COVID vaccines stimulate an immune response?

    1. By introducing live attenuated SARS-CoV-2 virus
    2. By introducing a real SARS-CoV-2 virus
    3. By introducing a harmless piece of SARS-CoV-2 virus
    4. By introducing antibodies against SARS-CoV-2 virus
    Show answer

    Answer: A — By introducing live attenuated SARS-CoV-2 virus

    Vaccines like Covaxin use inactivated/attenuated virus to trigger immunity.

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Official sources (1)

Bihar Public Service Commission