Vaccines · Pharmacology

mRNA vaccines work by:

  1. Delivering inactivated virus particles
  2. Inserting viral DNA into the host genome
  3. Providing messenger RNA that codes for a viral protein
  4. Stimulating passive immunity
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Correct answer: Providing messenger RNA that codes for a viral protein

mRNA vaccines deliver messenger RNA encoding a specific viral antigen, such as a spike protein. Host cells translate the mRNA to produce the antigen, triggering an immune response. They do not integrate into the host genome.

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