A coronavirus vaccine likely won't be available for widespread distribution until 2021, former FDA Commissioner Scott Gottlieb said Sunday.
The health expert said there are a "lot of uncertainties" when going from scaling up manufacturing of a vaccine from an experimental basis to get quantities available for the wider population.
"I would say thats' probably more likely a 2021 event that we're going to have a vaccine available in sufficient quantities to mass inoculate the population," he added.
Gottlieb noted that people may need two doses of a potential vaccine. If 200 million people are eligible and want a vaccine, it may take 400 million doses to do so.
"It's probably a 2021 event," he said.
Gottlieb, however, said he thinks a vaccine will be available in the fall to "ring fence an outbreak" in a city or to inoculate a "certain portion of the population on an experimental basis."