COVID-19 December 3, 2020 6:24 pm COVID-19: ‘Explosion Of Cases' Brings ‘Crisis Situation' Top health officials warn even worse days are ahead after the U.S. set new records for single day deaths and new infections. 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