Do i need the second pfizer vaccine?
Score: 4.6/5 (67 votes) COVID-19Common questionDo you need two Pfizer-BioNTech and Moderna COVID-19 vaccines?If you received a Pfizer-BioNTech or Moderna COVID-19 vaccine, you should get the same product for your second shot. You should get your second shot even if you have side effects after the fi...