US vaccinating millions of Americans daily. But here’s why Covid-19 hospitalizations are still up

Experts say Covid-19 vaccinations in the US are continuing at an impressive pace, and now all Americans 16 and up can get a shot. But a leading health official said that the country remains in a “complicated stage.”Experts say Covid-19 vaccinations in the US are continuing at an impressive pace, and now all Americans 16 and up can get a shot. But a leading health official said that the country remains in a “complicated stage.”