New @P_H_S_Official data published in @TheLancet show 2 doses of vaccine needed to prevent symptomatic COVID. Vaccine Efficacy Pfizer 1 dose: 33% 2 doses: 83% Astra Zeneca 1 dose: 33% 2 doses: 61% https://t.co/0HsplrXCuT Similar results to @PHE_uk See Table https://t.co/1i1w6bHiYy
— Vincent Rajkumar (@VincentRK) Jun 15, 2021
via Twitter https://twitter.com/VincentRK
June 15, 2021 at 06:55PM
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