Sinovac booster weaker against Omicron – HK study

Three doses of Sinovac’s CoronaVac Covid-19 vaccine do not produce adequate levels of antibodies to fight the Omicron variant of the coronavirus, researchers from Hong Kong said in a statement.

Their analysis revealed the Pfizer-BioNTech vaccine was more effective, as a third dose of the shot administered after two doses of the same or China’s Sinovac vaccine provided “protective levels” of antibodies against Omicron.

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