Name: CDC Chief on Omicron, Delta killing unvaccinated and why mask rules changed
Uploaded: Fri Dec 03 2021 23:23:23 GMT+0000 (UTC)
Duration: 7 min 46 s
Description: As the Omicron variant spreads across the U.S., CDC Director Dr. Rochelle Walensky joins MSNBC's Ari Melber to discuss what experts know about the new variant, why the Delta variant is still the main coronavirus risk in the U.S. and the CDC's shifting mask guidance.

Dec. 3, 202107:46