ABC News contributor and epidemiologist Dr. John Brownstein discusses the drop in demand for the COVID-19 vaccine, the confusion around second doses and the future of vaccinating children. ABC News Live Update, Weekdays at 9 AM & 11AM EST WATCH the ABC News Live Stream: https://bit.ly/3rzBHum 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 #COVID19 #Vaccinations