President Biden called Vice President Kamala Harris the “president” during a speech in which he referenced vaccinations on Thursday.

“This is really important,” Biden said of the country’s immunization effort. “Because we believe in speed and efficiency must be matched with fairness and equity. Now, when President Harris took a virtual tour of a vaccination center in Arizona not long ago, one of the nurses on that tour — injecting people, giving vaccinations, said that each shot was like administering a dose of hope.”