There is talk that the biden administration will release the vaccine stockpile, now being saved for booster, trying to get as many as possible with one jab, banking on vaccine manufacturing to meet very tight goals.
I read some discussions of that in the media, and we discussed it here. I have not heard the Biden admin. is thinking of doing this. In the UK they talked about administering a half-dose of one of the vaccines, because that seemed to work as well as a full dose. I think the experts there advised against it.
It turns out the vaccine stockpile was not being saved for a booster. That was a mistake. The Trump admin. said it was, and then a week later it informed the states there is no stockpile after all. Apparently, they miscounted doses. The plan was to ship the reserve stockpile and then depend on an increase in production to give people the booster three weeks later. That's what I called the "logistics method." That plan has fallen through. See:
US didn't have a COVID-19 vaccine stockpile when HHS announced strategy to release second doses, officials say
There was no stockpile of second COVID-19 vaccine doses waiting to be shipped, despite reports of a stockpile and HHS Secretary Alex Azar announcing earlier this week that the government would start distributing all reserved doses of the vaccine, The Washington Post reported.
The administration had already begun shipping out all doses of the vaccine at the end of December, state and federal officials told the Post.
Patrick Allen, a health director in Oregon, told the Post that Gustave Perna, chief operating officer of Operation Warp Speed — the government's initiative to speed COVID-19 vaccine and drug development and distribution — had notified the state that "there is no reserve of doses, and we are already receiving the full allocation of vaccines." . . .