One AZ, Pfizer COVID-19 vaccine dose results in 80% lower death risk -… stocking 0 48 2021.05.11 08:39 https://youtu.be/VAHRSpfJD7I + 5 영국서 AZ•화이자 백신 1회 접종 후 사망위험 80% 감소 Recent data from the UK shows,... both AstraZeneca's and Pfizer's COVID-19 vaccine,... reduce the risk of ...