Vaccine Watch: NIH director optimistic on vaccine efforts

ABC News’ Bob Woodruff speaks with the director of the National Institutes of Health, Dr. Francis Collins, about the latest developments in the search for a COVID-19 vaccine.
4:39 | 07/23/20

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Transcript for Vaccine Watch: NIH director optimistic on vaccine efforts
Body the US government this morning announced it will provide pharmaceutical company Pfizer and its German partner a whopping two billion dollars for the nationwide delivery of the first 100 million doses. Of their Kobe nineteen back seen. It's they're able to successfully produce one. But the plan to distribute those doses free to all Americans and this week are Bob Woodruff Colorado put the head of the National Institutes of Health. Doctor Francis Collins to discuss the latest development in the race for a vaccine. Here now our weekly vaccine watch the. One of the top medical leaders in the country is expressing cautious optimism. That there will be a viable vaccine by year end this is listen caution. Is that by the end of 20/20. We will have one and Toomer 83 vaccines. Have been proven saves and exactly what Francis Collins has directed the National Institutes of Health NIH and for the past decade making him a long time friend and Boston doctor Anthony pouch. Although encouraged by the highly competitive race for a vaccine. I think we expect to have bashing are bearable produced. And on the shelf social more house. By the fourth quarter this year. Or all of them we were aiming for September oh. Collins says it's still unclear. Who will actually win the race Burris destiny really effective and completely sixth. It's not those same as well maybe you've got to the finish line Britney didn't win as of this morning Pfizer and his German partner. Were selected to be potential recipients of nearly two billion dollars to the US government's operation warp speed. But only if they make it across the finish line. It is that he will see client clinically the arm but I. Asian the FDA bio to our eyes slowly recede money are seen as by the NCAA. Also making headlines this week Oxford and its partner AstraZeneca so let's move to Oxford University said that their moms the other competitors they're phase one data looks really good. I wouldn't say it looks. Statistically better than what you see you've heard about during the trial. Or trolley look at it is really encouraging to see right now most federal money invested in these companies is a gamble. But Collins expects there will be at least one effective vaccine for which we have collectively a hundred million doses already manufacturing. And ready to be distributed to the highest this feeble. With the promise of scaling manufacturing. Rapidly an early age and wind so that I spring. 21. We have most Americans able to receive BM in his age. Vaccine development is moving at an unprecedented. Speed. But Collins emphasized that safety remains a top. After all I honestly get in line and I would encourage everybody I know producing. But there is still lingering skepticism among some Americans who say they won't get vaccinated. Psalm still won't Wear masks. And it is ironic isn't it here we are the United States of America. Most technologically advanced country in the world and yet there's also. This question this skepticism about science and you trusted and whether that's about whether you really do need it where you go outside. Just very well established or whether vaccine that you're being offered is something you want to take unfortunately. Are back. Resistance that skepticism is now being very much whipped out of my social media the next conspiracy theory that. Ends up in your inbox there's plenty of those some of them are outlandish. And yet to my astonishment I find reasonable people believe. The test for safety continue as many of these companies move towards phase three the largest of the human trials. Need everybody to decide to look at this and see if they'd like to volunteer take part and I certainly wouldn't go to this website which is corona virus prevention network all one word dot org to gather enough data these trials need tens of thousands of volunteers. Next week maternal won't begin phase three trials right here in the US. This is Bob Woodruff tracking the race for a vaccine. And our thanks to Bob Woodruff there.

This transcript has been automatically generated and may not be 100% accurate.

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