Welp, the pandemic has served up yet another poop sandwich, and it’s called omicron. This variant is popping up in dozens of countries across the world, and scientists are racing to get a handle on it. In the meantime, will doubling down on our old vaccines help keep us protected from variants like omicron? To find out, we talk to immunologist Dr. Ali Ellebedy.

Learn more about your ad choices. Visit podcastchoices.com/adchoices