Inside 1 lab’s race to create a COVID-19 vaccine

6 companies aside from Johnson & Johnson are in phase 3 of human trials, but the scientists working round the clock at the company’s lab in Boston could see a vaccine by early next year.
1:27 | 08/06/20

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Transcript for Inside 1 lab’s race to create a COVID-19 vaccine
There is news tonight in the race for a vaccine, modern and pfizer in phase three of human trials, and Johnson & Johnson moving forward, too. And their scientists tonight allowing our cameras inside the lab, and why what they're seeing is giving them hope. Here's ABC's Bob woodruff tonight. Reporter: Tonight, the race to develop a possible vaccine to fight covid-19. We got a first-hand look at a lab in Boston -- Why don't we go into this room? Reporter: -- Where scientists for Johnson & Johnson are working around the clock. This is one type of antibody test. We're seeing some nice responses in these plates. This is without the vaccine and with the vaccine. You can see that there's a lot more color. The color signifies antibodies. Reporter: So this is good news? It is good news. Reporter: Just last week, Johnson & Johnson announced their vaccine protected monkeys from getting covid. And with one single injection. Are you pretty confident this will work? We are cautiously optimistic. Reporter: Today, the company is now in phase two of its trial, reaching a $1 billion deal with the U.S. Government to guarantee at least 100 million doses for Americans. Have there been any kind of effects on the humans that are So far so good. Reporter: Six other companies are already in phase three human trials, but Johnson & Johnson says they will catch up and if everything goes well, we could see their vaccine by early next year. David? Let's hope so. Bob, great to have you.

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

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