While Sinovac said they are still awaiting enough data to show the level of efficacy, a study at Yale University in the US shows that 2 doses of the Chinese-made vaccine with a booster shot of Pfizer look to be less effective against the Omicron variant of Covid-19 than the previous variants. The study was a collaboration between several institutions as well as the Ministry of Health of the Dominican Republic.
Full vaccinations of 2 doses of many different brands of vaccine have shown to be far less effective against the Omicron variant but the third booster shot for several vaccines including AstraZeneca, Moderna, and Pfizer have been tested to be effective against the variant. But this new study shows that a mixture of 2 Sinovac vaccines and one Pfizer shot yields results in protection similar to having only 2 doses of an mRNA vaccine.
Compared to the Delta variant, the antibody…
