CNN.com - RSS Channel - HP HeroExpert explains how we'll know if vaccines work on Omicron

Dr. Peter Hotez discusses the Omicron variant and when we'll know if vaccines are effective against it.

November 28, 2021 at 03:42AM https://ift.tt/3xCKOhS. Peter Hotez discusses the Omicron variant and when we'll know if vaccines are effective against it.