More people can now get second Covid-19 booster shots after federal health officials announced they are allowing a broader group to get fourth doses of the two messenger RNA Covid-19 vaccines made by Pfizer/BioNTech and Moderna.
원문출처 : https://www.cnn.com/2022/04/08/health/vaccine-covid-booster-wen-wellness/index.html
원문출처 : https://www.cnn.com/2022/04/08/health/vaccine-covid-booster-wen-wellness/index.html