COVID-19 VACCINE

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  • SolveCasters
    We found that the absolute difference in vaccine effectiveness against symptomatic disease with one dose of vaccine with the delta variant as compared with the alpha variant was approximately 12 to 19 percentage points. However, the differences in vaccine effectiveness after two doses were small. This was the case for both the BNT162b2 and ChAdOx1 nCoV-19 vaccines. https://www.nejm.org/doi/full/10.1056/NEJMoa2108891
    2021-07-23