Interim Estimates of Vaccine Effectiveness of BNT162b2 and mRNA-1273 COVID-19 Vaccines in Preventing SARS-CoV-2 Infection Among Health Care Personnel, First Responders, and Other Essential and Frontline Workers - Eight U.S. Locations, December 2020-March 2021.

Thompson MG;Burgess JL;Naleway AL;Tyner HL;Yoon SK;Meece J;Olsho LEW;Caban-Martinez AJ;Fowlkes A;Lutrick K;Kuntz JL;Dunnigan K;Odean MJ;Hegmann KT;Stefanski E;Edwards LJ;Schaefer-Solle N;Grant L;Ellingson K;Groom HC;Zunie T;Thiese MS;Ivacic L;Wesley MG;Lamberte JM;Sun X;Smith ME;Phillips AL;Groover KD;Yoo YM;Gerald J;Brown RT;Herring MK;Joseph G;Beitel S;Morrill TC;Mak J;Rivers P;Harris KM;Hunt DR;Arvay ML;Kutty P;Fry AM;Gaglani M