President Joe Biden tested positive for COVID-19 over the weekend after initially recovering. Dr. Todd Ellerin and ABC News Deputy Political Director Averi Harper break down what that means. WATCH the ABC News Live Stream Here: https://www.youtube.com/watch?v=w_Ma8oQLmSM SUBSCRIBE to ABC NEWS: https://bit.ly/2vZb6yP Watch More on http://abcnews.go.com/ LIKE ABC News on FACEBOOK https://www.facebook.com/abcnews FOLLOW ABC News on TWITTER: https://twitter.com/abc #ABCNLUpdate #biden #covid19 #paxlovid