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Anthony S. Fauci, director of the National Institute of Allergy and Infectious Diseases, said Tuesday that he believes the “optimal regimen” of vaccination against the novel coronavirus will include a booster shot.

His comments come after the Centers for Disease Control and Prevention announced last week that millions of Americans are now eligible for a booster dose — though the decision was not without controversy. The Biden administration has been pushing for expanded third dose eligibility.

As the highly transmissible delta variant continues to surge and hospitals nationwide are once again overwhelmed by covid-19 patients, Fauci said addressing waning immunity will be crucial.

“Ultimately I believe that the optimal regimen for the mRNA [vaccines] is going to include that third booster shot,” he said.

Here’s what to know

  • Pfizer and BioNTech said Tuesday that they have submitted initial data to the Food and Drug Administration from their vaccine trial on children between 5 and 11 years old.
  • Nearly 1 million Americans have scheduled appointments to receive the third dose of the Pfizer-BioNTech coronavirus vaccine, according to the White House. Here’s what you need to know about the United States’ boosters rollout.
  • After months of declining to reveal his vaccination status, Los Angeles Lakers star LeBron James confirmed Tuesday that he has received the shot.
  • As the federal government has rolled out sweeping coronavirus vaccine mandates, Americans are divided on whether such requirements should apply to workplaces and eligible K-12 students, according to the results of a Kaiser Family Foundation poll released Tuesday.
  • Nearly all of United Airlines’ U.S.-based employees have been vaccinated, the company said Tuesday, touting the success of its policy after becoming the first U.S. carrier to require the vaccine among its workforce.