That 'efficacy' figure? It doesn't translate from one test to another. And it's not the most important number, anyway.
Dr. Anthony Fauci joins MSNBC's Ari Melber in a special interview to discuss the Covid-19 vaccine, to dispel related myths and skepticism and to explain why he and Biden will likely take it publicly.
Masks (whether surgical, or N95, or cloth) are counterintuitive and actually work much better epidemiologically than one might expect. Here's why that's so.