Wuhan August 10, 2020 11:17 am Inside the Wuhan Lab At the Center of the Mystery of Pandemic's Origins NBC has an exclusive look inside the Wuhan lab working to track the origins of the virus. 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