The U.S. has finally approved its first coronavirus vaccine and began dosing some of the most at-risk people, including health care workers, on Monday.
But the supply of Pfizer s vaccine is scarce. The firm shipped out just 2.9 million doses, beginning over the weekend.
The rollout of coronavirus vaccines will have many stages and is the most massive vaccination campaign ever undertaken in the U.S.
DailyMail.com breaks down what will happen next.
Health care workers are among the first to get vaccinated against COVID-19 in the US - but younger, healthy people who don t work on the front lines could be waiting months