To do that for any drug, the FDA needs to approve the new factory setup at a minimum, and that would probably take at least 3 years in practice. Problem is, vac

To do that for any drug, the FDA needs to approve the new factory setup at a minimum, and that would probably take at least 3 years in practice. Problem is, vaccines are biologicals and you don't get generics for biologicals so that's out from the start. You'd have to re-do at least part of the trials to get a biosimilar licensed.