coronavirus June 16, 2021 1:49 pm Coronavirus Delta Variant Declared a ‘Variant of Concern' The Delta variant of the coronavirus accounts for 10% of new U.S. cases and is known to spread more easily and cause more severe disease. US & World Videos 3:18 USC's commencement preparation includes increased security patrol 1:56 1 person killed after car crashes into South LA church 3:30 Protest on USC campus continues ahead of graduation 0:43 LA County releases sterile mosquitoes as warmer weather nears 2:42 Days before USC commencement, protesters still camped out on campus
