There's strong evidence that all three vaccines being used in the U.S. offer good protection against the U.K. variant. At hospitals run by the University of Colorado, Dr. Michelle Barron [CU School of Medicine professor] says the median age of COVID patients has dropped by more than a decade. It's now people in their late 40s. “A lot of them are requiring ICU care, whereas before, a lot of them were more so just on the floor and still requiring hospitalization but not quite as sick.”