President Joe Biden, in his Thursday night speech, will tell all 50 states to make all adults who want to get a coronavirus vaccine eligible by May 1. Likewise, he will set a symbolic goal of July 4 for allowing small gatherings, what he plans to call “closer to normal.” The White House’s proposal also includes increasing the number of pharmacies dispensing vaccines by 100 percent, doubling the number of federal mass vaccination sites, deploying thousands more active-duty military personnel to aid vaccination efforts, and widening the scope of health-care providers allowed to administer the vaccine, i.e. to dentists and veterinarians.

Three vaccines are currently available, most often known by their makers’ names: Pfizer-BioNTech, Moderna, and the newly authorized Johnson & Johnson. The United States is slated to reach 100 million doses Thursday night, and the Centers for Disease Control and Prevention announced the same day that one in four Americans had received at least one dose of a vaccine. Pfizer and Moderna’s jabs require two doses, whereas Johnson & Johnson’s requires one.