COVID-19 cases involving highly contagious UK variant on the rise

Experts are worried about “superspreader” events as states ease restrictions.
3:11 | 03/08/21

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Transcript for COVID-19 cases involving highly contagious UK variant on the rise
We begin with urgent warnings. Americans being told not to let their guard down with cases of the highly contagious uk variant now on the rise. Experts worry about scenes like these in Florida. A arrive haven for spring breakers. That state already has more cases of the uk variant than any other state. The impact of the virus is still being felt on professional sports. The NBA all-star game will be played without two stars from the Philadelphia 76ers. After a possible exposure to covid. Meanwhile, nationwide, vaccinations are starting to pick up. Mass vaccination sites like this one in New Hampshire now open to the public. But experts warn, the crisis is far from over. Trevor Ault leads us off. Reporter: Tonight, spring breakers flooding into places like Florida. I'm from Boston. I'm from New York. Reporter: Behaving as if the pandemic is already over. It's a sense of back to normalcy. Reporter: And in daytona, a massive bike rally rolling into town. But the huge crowds and relaxed restrictions and highly contagious coronavirus variants, sparking urgent warnings of a new surge. Given how close we are to the finish line, anybody gets infected today and who dies in the next month to three weeks could be someone who would have gotten vaccinated a month from now. Reporter: "The New York Times" reporting the uk variant likely makes up to 26% of cases nationwide. Still, NBA all-star weekend drawing thousands to Atlanta. Two players forced to sit out due to possible exposure. The game closed to the public. But many fans partying outside. We've been dealing with this for a year now. Life is not going to stop for anyone. Reporter: At least 16 states now without mask mandates or recently lifting them like Mississippi. I trust mississippians to make good decisions. Reporter: And already this weekend, the state's bars packed with maskless patrons. In Idaho, a crowd gathering at the capitol, setting fire to masks in protest. And tonight, the race to vaccinate accelerating. The nation hitting a single day reporting record, 2.9 million shots into arms. But still, speed bumps. Just 40 people showing up at this FEMA site in Florida. Then hundreds who didn't qualify turned away today. Still, 30 million Americans are fully vaccinated, like this 103-year-old, who survived the 1918 pandemic and the holocaust. I thank god every day. At 103, I'm still in good shape. Because my wife takes care of me all the way. She's wonderful. Piece of gold. Thankful to his wife. Trevor, joining us now from new York City. We know vaccinations are ramping up. But this week, we won't be receiving any new doses of Johnson & Johnson's single shot vaccine? Reporter: That's right. All of the nearly 4 million available Johnson & Johnson doses have already been sent out. But pfizer and modern should be keeping pace, with more than 15 million combined doses expected to be distributed this coming week. Trevor, thank you. And now to the latest

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

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