The U.S. top infectious disease expert Dr. Anthony Fauci said in a CNN interview  on Thursday that there could be a coronavirus vaccine by January if "everything falls into place right," but there are "a number of situations that could go wrong."

"I've been involved in vaccine work for decades. Not every vaccine we went after worked. That's an assumption that it's going to be safe, that it's going to be effective and we're going to be able to do it quickly. I think each of those are not only feasible but maybe likely. That's what I mean when I say by January we'll do it. But I can't guarantee it," said Fauci in the interview.

When asked about the second wave of a coronavirus outbreak earlier in the week, Fauci said it would almost certainly come, and he pointed out that it would likely lack the speed and ferocity of the initial outbreak in the U.S., and could hit locations where social distancing is being challenged, such as nursing homes, factories and prisons.