Transcript for Vaccine Watch: Warp Speed chief says no undue White House pressure
Now to the latest on the race for a vaccine and a rare sit down with the former pharma executive. Now acting as chief advisor of the administration's warp speed program hoping to produce a safe and effective corona virus vaccine in record time. Tonight he gives us a behind the scenes look at one of those critical clinical trials taking place. And tells us what he sees as a really realistic timeline for getting a vaccine to all Americans. Here's ABC's Bob Woodruff with tonight's vaccine watch. In a rare interview the scientists brought in by president traumatic head America's vaccine program. I'm told us that by this spring all Americans may have access to a vaccine. And by June everybody. Could be immunized. So there is it's a plan it's not a certainty that. The plan I think gun I feel pretty confident. Should make it sets that by June everybody could have been immunized in the US and. Doctor months of slowing is the chief advisor of operation warp speed. The goal is to accelerate vaccine developments as fast as possible without compromising safety and getting way too much pressure from the White House. There's honestly I said it's many times I've had that's a single press are really no pressure. And I have all the time said if I get undue pressure I would say it's an alien resign. But as of late he is growing we frustrated by politics. Saying if this pandemic had happened outside an election year the vaccine would not be so political. I think transparency and say the information is absent their rights I think doing its. We do within the political objective. Which then taints even the totally to its it is was smitten I think he's read dangerous. In fact a recent Gallup poll shows that only about half of Americans say they would even take a vaccine if it were available and free today. All the news that seems to be that people are. Losing faith so bad about the safety L Lewis the number. Of Americans who would like to take this vaccine when it's approved it's going down. I'm very worried about that I'm really worried about death I think unfortunately it's it's the politics. Around it's and I do think. That if these same events were happening two years ago I I eat away from an election time. I'm sure. The same scrutiny could happen but it's would have a different. Tilted. But with even the first authorization not expected for months there is still time to turn that hesitation to line up for the vaccine around. Today his mission is getting more people to volunteer for clinical trials. Which could speed up approval like this one at George Washington university's vaccine research center. We joined doctor Slough it there this morning as he inspected the trial. And resilience those rather than anyone. One of them. You have a side effects are little. These are not great amount. It more math minorities office. Signed up. Does your life you. So I know from moment to. And 2016 doctor slowly was head of vaccines for the pharmaceutical company GlaxoSmithKline. And back then he was already preparing for a pandemic. We never seem to be able to get a vaccine ready soon enough and he's just that dynamic quite. Got some of them in every time there's an outbreak and unfortunately we're info or an outbreak every year are all the years we knew exotic name. Assuming nothing goes wrong slyly says two companies could have an FDA authorized a vaccine. By the end of the year. So my prediction is eight. The month of December. For the more than an accident defies a vaccine who'd have. Between twenty and fourteen million doses of vaccine stockpile and it's then we can start humanizing the highest risk. He produced. The first line workers and health care workers. Before the end of the year before the end of the year now not every one in Bethel predation ten demonized in December. But the companies would continue to manufacture and and produce vaccines those as. In January we plan to have about sixty to eighty million those as of those who vaccines. But testing is ongoing and will continue in the weeks and months to com. And despite speed bumps and some late stage trials Slough always trust remains in science. We you know this world more than anyone else if this gets approved. Would you be in line in the front line to take this vaccine shot. I would look into the dates have and I expected to only be approved if today's this of course that and I would absolutely get the facts and what about your kids would you I wouldn't it once it's approved for my. Eight years old kid I would give it to him my. Parents my spouse my friends my family. This is Bob Woodruff tracking the race for a vaccine.
This transcript has been automatically generated and may not be 100% accurate.