Assessing Covid-19 Vaccine Efficacy Against the Omicron Variant

A.M. Edition for Dec. 3. As countries detect more cases of the Omicron variant of Covid-19 that was first identified in southern Africa, WSJ's Joanna Sugden discusses how researchers and drugmakers are racing to figure out how effective the current vaccines are against the new strain. Peter Granitz hosts. Learn more about your ad choices. Visit megaphone.fm/adchoices