Doctors and health officials say their latest Covid-19 hospital patients are unvaccinated and increasingly younger

Covid-19 is putting younger, healthy and mostly unvaccinated people in hospitals at higher rates as cases continue to climb in much of the US, health experts say. Over the past week, 48 states saw an increase in Covid-19 cases, with 30 reporting a more than 50% increase, data from Johns Hopkins University shows. Low vaccination rates in some areas and increased spread of the more contagious Delta variant are making an already deadly virus even worse, especially for younger, healthy people, Dr. Catherine O'Neal, an infectious disease specialist at Our Lady of the Lake Regional Medical Center in Baton Rouge, Louisiana, told CNN's Erin Burnett on Friday.