After the Biden administration’s announcement that it will offer boosters to fully vaccinated people starting in late September, some felt unbridled glee that they could soon enhance their protection against the Delta variant.

Others, however, met the news with trepidation: Scientists remain divided on whether boosters are necessary, especially for the young and healthy. And amid cries for additional doses to be donated throughout the world, where more than 67 percent of people remain unvaccinated, some Americans may wonder whether getting a booster shot is the right thing to do when so many people aren’t able to get their first dose.

“The dilemma is that we are planning to distribute a booster—regardless of age—in