“We’re using the terminology now ‘keeping your vaccinations up to date,’ rather than what ‘fully vaccinated’ means,” Fauci said during a National Institutes of Health lecture Tuesday. “Right now, optimal protection is with a third shot of an mRNA or a second shot of a J&J.”

The Centers for Disease Control and Prevention called Tuesday for third shots of Pfizer-BioNTech’s Covid-19 vaccine to be administered within five months of the initial two-shot series, shortening the time frame before a booster by a month. A CDC advisory panel is expected to recommend boosters for teenagers in a meeting Wednesday…

Fauci and other health leaders as well as President Joe Biden have pressed for months about the importance of getting both vaccinated and boosted. But the CDC’s definition of fully vaccinated has remained two weeks after the primary dose or doses. That decision has prompted questions at multiple White House press conferences as to whether the agency plans to change the definition of fully vaccinated.