More than 100 million Americans have received at least one dose of Covid-19 vaccine, according to the Centers for Disease Control and Prevention.
And openness to the vaccine is rising, with 74% of Americans reporting that they're willing to get a Covid-19 vaccine or that they've already received one, according to a Gallup poll published on March 30. That number is up from 65% from December.
Still, though, some 26% of Americans say they would not get a vaccine right now.
Getting the country over the threshold of herd immunity means finding ways to persuade at least a portion of the people still hesitant to get their shot.