Drug companies will be expected to hit a series of milestones before they are allowed to distribute a coronavirus vaccine. The Food and Drug Administration has privately told vaccine makers they want them to comply with a set of guidelines that go beyond what the agency has said publicly, according to FT sources.
The guidelines, which include asking companies to wait until they have monitored trial participants for a median time of at least two months, are not yet hard-and-fast rules. But the FDA is now debating making them public in a move that would make it difficult for companies to