Effectiveness of mRNA-1273 and BNT162b2 Vaccines in Qatar – New England Journal of Medicine   Commentary on Twitter In two matched retrospective cohort studies comparing BNT162b2 and mRNA-1273, both were highly effective at preventing hospitalization & death. Breakthrough infections were lower among those who received mRNA-1273 than those who received BNT162b2. https://t.co/wgkrzfLNHz pic.twitter.com/E8hXIDFqWW — NEJM […]

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