U.S. and German vaccine partners Pfizer and BioNTech on Friday pledged to deliver 2 billion doses of their vaccine to low- and middle-income nations as part of a global effort to close the vaccine gap between rich and poor nations.Pfizer CEO Albert Bourla, speaking in Rome at the Global Health Summit, said the first billion … continue reading -> “Pfizer, BioNTech Pledge 2 Billion Vaccine Doses to Poor Nations”