Chinese covid vaccine found inferior to Pfizer shot in study
- Researchers found CoronaVac was 66% effective in preventing Covid-19 among fully vaccinated adults, versus 93% for the jab made by Pfizer and its partner BioNTech SE.
Sinovac Biotech Ltd.’s vaccine was less potent than Pfizer Inc.’s shot at stopping Covid-19 in Chile where the two shots were used simultaneously, the first real-world analysis comparing a China-made inoculation against an mRNA has found.
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