Even though vaccines are still scarce—in the US, most people who want a shot still can’t get one—the rich nations of the world have promised manufacturers to buy many times more doses than they need. “There 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. On the day they made their statement, WHO officials estimated that 128 million vaccine doses had been administered in the world, but more than three-fourths of those vaccinations took place in just 10 rich countries—while just under 130 countries housing 2.5 billion people had not received a single dose.