MORE People ages 18-29 are being hit the hardest by the most recent coronavirus surge. Why aren’t younger people getting vaccinated? Photo by Shutterstock. LA County is now reporting some 10,000 new COVID-19 cases per week, and over the weekend, Angelenos had to restart wearing masks indoors, regardless of their vaccination status. Roughly 53% of LA County is fully vaccinated. But with the Delta variant rapidly spreading and case numbers and hospitalization rates rising, it’s young people, ages 18-29, that are being hit the hardest. Pediatrician Dr. Leila Bozorgnia tells KCRW, “I've heard something like [the Delta variant is] four or five times more contagious than the Alpha variant. And so it's very easy to catch. And we are getting our adolescents and teenagers vaccinated, but I still think that there's a considerable subset of that population that is still perhaps holding off or waiting.”