'This is now a pandemic of the unvaccinated': COVID cases surge in 43 states amid rise in Indian 'Delta' variant as CDC says number of new infections has doubled nationally in the past three weeks
Health experts warn that the worrying increase in cases is linked to the Delta variant, which accounts for as many 97 percent of infections in some states
Centers for Disease Control and Prevention data show that the Delta variant, also known as B.1.617.2, makes up 51.7 percent of new infections
In the United States, 59 percent of adults are fully vaccinated while 68 percent have at least one shot
Dr. Chris Pernell, a fellow at the American College of Preventative Medicine, called it a 'pandemic of the unvaccinated' in an interview on Tuesday