The CDC has come out with a plan to distribute COVID vaccines to hospitals and clinics. Any facility that wants to vaccinate, has to enroll in the US COVID-19 vaccination program. Priority will be given to facilities that are best equipped to vaccinate large numbers of people.
The Moderna vaccine needs to be stored in a freezer, is given in two doses, and vials have to be used within 6 hours after opening. The Pfizer vaccine is stored at ultracold temperatures, will be transported in dry ice in special containers, will need to be diluted before use, and also requires two doses.