Name: Dr. Ashish Jha speaks on omicron variant
Uploaded: Tue Nov 30 2021 00:09:10 GMT+0000 (UTC)
Duration: 1 min 42 s
Description: Dr. Ashish Jha speaks with Lester Holt about the effectiveness of Covid-19 vaccines and booster shots against the omicron variant, the risk for unvaccinated Americans and more.

Nov. 30, 202101:42