Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults — United States, March–July 2021 User Pikachus_brother, in the COVID-19 subreddit, 20 Aug 2021
Sustained Effectiveness of Pfizer-BioNTech and Moderna Vaccines Against COVID-19 Associated Hospitalizations Among Adults — United States, March–July 2021 User IceBlast24, in the Novel Coronavirus (COVID-19) subreddit, 19 Aug 2021