Clinical trial results of Pfizer/BioNTech's Covid-19 vaccine showed its efficacy is 100% and it is well tolerated in youths ages 12 to 15, the companies said Wednesday.
원문출처 : https://www.cnn.com/2021/03/31/health/pfizer-vaccine-adolescent-trial-results/index.html
원문출처 : https://www.cnn.com/2021/03/31/health/pfizer-vaccine-adolescent-trial-results/index.html