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Effectiveness of Covid-19 Vaccines against the B.1.617.2 (Delta) Variant

Date
Wednesday, November 10, 2021 - 7:00 AM
Description
To the Editor: In their study, Lopez Bernal et al. (Aug. 12 issue)1 estimate the effectiveness of the BNT162b2 and ChAdOx1 nCoV-19 vaccines against symptomatic disease caused by the B.1.617.2 (delta) variant. The authors encountered a unique