Comparing Covid Vaccines Pfizer Vs. Moderna Vs. Astrazeneca/Oxford : Oxford-AstraZeneca COVID-19 vaccine shows over 70% efficacy - The pfizer, oxford and moderna vaccines each require two doses and you are not fully vaccinated until you have had both shots.
Comparing Covid Vaccines Pfizer Vs. Moderna Vs. Astrazeneca/Oxford : Oxford-AstraZeneca COVID-19 vaccine shows over 70% efficacy - The pfizer, oxford and moderna vaccines each require two doses and you are not fully vaccinated until you have had both shots.