How will the Pfizer COVID vaccine be distributed in the US?
Pfizer says the vaccine it has been developing with German partner BioNTech SE is 90 percent effective against COVID-19 and it expects to have safety data as soon as next week.
Pfizer says the vaccine it has been developing with German partner BioNTech SE is 90 percent effective against COVID-19 and it expects to have safety data as soon as next week.