Up to this point, vaccine-related ethical questions have mostly been about taking them: Should you accept a shot thatâs about to be thrown away? Does increasing herd immunity justify jumping the line? Now the focus is turning to giving. Will affluent countries contribute to the greater good by releasing their hold on so much of the worldâs vaccine supply? If they donât, that could extend the pandemicâand depress global trade, keep borders closed, and provide variants the opportunity to evolve. âThis is a question of global justice, fairness, and morality,â says Gavin Yamey, a physician and director of Duke Universityâs Center for Policy Impact in Global Health. âThere is a very powerful ethical reason why people everywhere should have the right to vaccines as a global public good, and that vaccines should not just be hoarded by rich nations. I know that that argument alone may not be persuasive to rich people in rich countries, but it is one that we need to keep reminding rich nations about.â