vaccine October 21, 2021 11:14 pm CDC Expands Booster Rollout, Approves Mixing Shots Millions more Americans will have access to booster shots for COVID-19 vaccines after the FDA and the CDC approved new measures. US & World Videos 1:39 Lawrence police cracking down on illegal dirt bikes 1:31 CDC recommends updated Covid shot for everyone ages 6 months and up 2:30 Putting an increase in COVID cases into context 1:41 COVID cluster prompts masking at Beth Israel Deaconess Medical Center 0:50 COVID cluster at hospital prompts return of mask requirement in affected unit