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The U.S. was administering an average of 3.3 million COVID-19 vaccine doses a day in mid-April, and then, to the alarm of public health officials, the numbers started steadily declining, dropping to a seven-day average of 1.98 million doses a day on May 8. Since then, the numbers have started rising again, hitting an average of 2.2 million daily doses administered by Wednesday, according to Centers for Disease Control and Prevention data tabulated by The Washington Post and The Wall Street Journal.

Andy Slavitt, a White House COVID-19 adviser, gave the slight uptick a thumbs-up on Tuesday.

About 44.7 percent of U.S. adults are fully vaccinated, including 71.6 percent of people 65 and older, the Journal reports, though those numbers vary from state to state. Connecticut, for example, has fully vaccinated 56.3 percent of all adults, while Alabama has vaccinated 33.2 percent. The overall vaccination rate is primed for a bump as adolescents age 12 to 15 become eligible, likely later this week.

The U.S. recorded its fourth straight day of fewer than 40,000 new COVID-19 infections on Tuesday — Johns Hopkins University recorded 33,000 new cases, down from Monday's 36,898 cases. The last time the seven-day average of new cases — 38,826 as of Monday, the Journal reports — was that low was back in the mid-September trough between two waves of infections. Another 684 Americans died of COVID-19 on Tuesday, bringing the recorded U.S. pandemic total to 582,800 deaths.