U.S. ahead of pace on vaccines

The big picture: "54 million people have received at least one dose," the N.Y. Times reports.

Mega-sites and around-the-clock operations are kicking in:

• New York will open three mass vaccination sites on Friday, and three more sites will go around-the-clock.
• Georgia is also preparing to open five sites in two weeks.
• FEMA has seven sites of its own in California, New York and Texas, the Times notes, with more on the way.

What's next: Parents with children and younger teens are anxious to know when they can all get vaccinated — but the reality is that they may not be able to get their whole family protected for months, per Axios' managing editor David Nather.

• Pfizer and Moderna both have completed enrollment for studies of children ages 12 and older, and they expect to release the data over the summer, the AP reports.