What Do We Know About the Omicron Variant?

The latest Covid-19 variant was detected last week in South Africa, and scientists say it's more transmissible and better able to evade current vaccines. President Joe Biden calls it "a cause for concern, not a cause for panic," but he rules out new "shutdowns or lockdowns." So what do people need to know about this new variant, and what is President Biden's plan to take it on? Learn more about your ad choices. Visit megaphone.fm/adchoices