Booster shots with mRNA vaccines such as those made by Pfizer and BioNTech failed to block infection with the omicron coronavirus variant in the first study of its kind, South African researchers said. Source: BusinessTech
Booster shots with mRNA vaccines such as those made by Pfizer and BioNTech failed to block infection with the omicron coronavirus variant in the first study of its kind, South African researchers said. Source: BusinessTech