Pfizer to test third dose, tweaked vaccine to target S.African strain
EU leaders seek to inject energy into slow vaccine rollout
25 February 2021Nationwide study shows BNT162b2 mRNA vaccine is effective
25 February 2021Pfizer to test third dose, tweaked vaccine to target S.African strain
Pfizer and BioNTech said Thursday they are studying adding a third dose to their vaccine regime and testing a new version targeting the South African variant of the coronavirus.
