Dr. Marc Siegel talks with virology expert Dr. Angela Rasmussen about the origins of COVID-19, vaccine efficacy, and what you need to know about the new strains being detected in the US and around the world.
Dr. Marc Siegel talks with virology expert Dr. Angela Rasmussen about the origins of COVID-19, vaccine efficacy, and what you need to know about the new strains being detected in the US and around the world.