Officials from the Centers for Disease Control and Prevention on Tuesday said that Americans should prepare for the likely spread of coronavirus, marking a more serious tone than President Trump’s statements about the issue earlier in the day.

How concerned should Americans be? And what steps should individuals, institutions, and communities take to prevent infection and illness? Dr. Erica Shenoy, associate chief of the Infection Control Unit at Massachusetts General Hospital, Rep. Jon Santiago, who doubles as an emergency room physician at Boston Medical Center, and Shirley Leung, columnist at "The Boston Globe," joined Jim Braude Tuesday on Greater Boston to discuss.