How effective is the Pfizer-BioNTech vaccine at preventing SARS-CoV-2 infection?
As vaccines roll out, studies are underway to continue to monitor their efficacy against SARS-CoV-2 infection, and particularly, against asymptomatic infections.
As vaccines roll out, studies are underway to continue to monitor their efficacy against SARS-CoV-2 infection, and particularly, against asymptomatic infections.