Transcript for Biden, Fauci urge COVID-19 vaccinations as delta variant now dominant in UK
We're going to begin with that new warning from president Biden about the delta variant first seen in India, now the dominant strain of coronavirus in the uk and spreading rapidly among young people 12 to 20 years old. Dr. Anthony Fauci saying tonight, we cannot allow that to happen here. Dr. Fauci also warning Americans that a study in the uk shows that the pfizer vaccine, for example, is only 33% effective against this troubling delta variant after one dose. But that it's 88% effective after two doses of the vaccine. Of course, underscoring the importance of both shots. Tonight, the numbers here. 171 million people in the U.S. Have received at least one dose. That's 61.2% of everyone 12 years and older. And there's news tonight about children in this country and the vaccine trials across the nation. ABC's Eva pilgrim leading us off. Reporter: Tonight, a warning from president Biden about the growing threat from the delta variant first identified in India. "Folks, the delta variant, a highly infectious covid-19 strain, is spreading rapidly among young people between 12 and 20 years old in the uk. If you're young and haven't gotten your shot yet, it really is time. It's the best way to protect yourself and those you love." The variant, which helped fuel the devastating surge in India, is now the dominant strain in the uk, which is why Dr. Fauci says getting vaccinated here at home is more urgent than ever. We want to get to and above the goal of 70% of the adult population receiving at least one dose by the fourth of July. Reporter: Right now, the delta variant makes up 6% of samples tested in the U.S., but Dr. Fauci warning the U.S. Is not in the clear. We cannot let that happen in the United States. If you've had your first dose, make sure you get that second dose. Reporter: He says it's critical to get fully vaccinated. The pfizer vaccine was 88% effective against the delta variant after the second dose. But only 33% effective after just one dose. Tonight, pfizer launching its phase two and three trial in younger children ages 5 to 11. Today at Stanford, 6-year-old Sophia Chavez and her 9-year-old brother Nicholas getting the first of two shots, a lower dose of vaccine that what's given to adults. So far what we're seeing is the vaccine is just as safe and well tolerated as what we've seen in adults. Reporter: In New Orleans, 7-year-old Russell bright getting his shot, too. That's why I've been trying to do all this stuff, so I can - see my friends more. And Eva pilgrim back with us again tonight. We know tens of millions of unused doses of the vaccine are sitting on shelves and tonight, several governors are warning a lot of this supply expires this month. I know the white house was pressed on this today? Reporter: Yes, David. The white house pushing back, saying it's just a small fraction of the total number of doses and that it's not realistic to expect that not a single dose would be wasted, but the scrutiny coming as much of the world is desperate for this covid vaccine. The governor of Ohio saying they don't have a legal option to send vaccines to other states or other countries. David? All right, Eva pilgrim leading us off tonight. Eva, thank you.
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