Pfizer And BioNTech COVID-19 Vaccine Shows 100% Effectiveness In 12- To 15-Year-Olds Post author:adex Post published:March 31, 2021 Post category:Uncategorized Post comments:0 Comments … Continue ReadingPfizer And BioNTech COVID-19 Vaccine Shows 100% Effectiveness In 12- To 15-Year-Olds