Experts say #COVID19 vaccinations in the US are going extremely well - but not enough people are yet protected and the country may be at the start of another surge.
The highly contagious #B117 #coronavirus variant has fueled an alarming rise in Covid-19 cases and hospitalizations in parts of Europe. And experts worry the US could be next if Americans don't double down on safety measures until more people are vaccinated.
What's worse, experts say, is that the variant is changing the pandemic's playbook and could spell trouble for younger groups that haven't yet been vaccinated.
