Multiple choice

Synthetic vaccines belong to the

  1. first generation

  2. second generation

  3. third generation

  4. fourth generation

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Vaccine generations: 1st (live-attenuated/whole-cell), 2nd (subunit/purified antigen), 3rd (synthetic/recombinant DNA), and 4th (mRNA/viral vector). Synthetic vaccines like recombinant or peptide vaccines are third-generation, using molecular biology techniques rather than whole pathogens.