https://www.news-medical.net/news/20230116/What-is-the-efficacy-of-the-COVID-19-second-booster-versus-the-first-booster-and-prior-COVID-19-infections.aspx
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1/16/23 at 3:50am
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News-Medical.Net
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Researchers assessed the efficacy of the COVID-19 second booster vaccine compared to the first booster vaccine and the protection conferred by prior COVID-19 infection.
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