The ongoing Phase 3 clinical trial of Pfizer/BioNTech's coronavirus vaccine confirms its protection lasts at least six months after the second dose, the companies said Thursday.
원문출처 : https://www.cnn.com/2021/04/01/health/pfizer-covid-vaccine-efficacy-six-months-bn/index.html
원문출처 : https://www.cnn.com/2021/04/01/health/pfizer-covid-vaccine-efficacy-six-months-bn/index.html