Pfizer, BioNTech say their Covid-19 vaccine is more than 90% effective
Pfizer, BioNTech say their Covid-19 vaccine is more than 90% effective
Nov 9, 2020, 2:41pm UTC
https://www.reuters.com/article/us-health-coronavirus-vaccines-pfizer/pfizer-biontech-say-their-covid-19-vaccine-is-more-than-90-effective-idUSKBN27P1CT