Reuters: Sinovac COVID-19 shot with Pfizer booster less effective against Omicron – study

Reuters: Sinovac COVID-19 shot with Pfizer booster less effective against Omicron – study. “Sinovac’s two-dose COVID-19 vaccine followed by a booster Pfizer-BioNTech shot showed a lower immune response against the Omicron variant compared with other strains, according to a study by researchers. The study, which has not been peer-reviewed yet, was conducted by researchers from Yale University, the Dominican Republic’s Ministry of Health and other institutions.”

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