Gottlieb - DR. GOTTLIEB: Cloth masks aren't going to provide a lot of protection, that's the bottom line. This is an airborne illness. We now understand that, and a cloth mask is not going to protect you from a virus that spreads through airborne transmission. It could protect better through droplet transmission, something like the flu, but not something like this coronavirus. We have to recognize this has not been a benign disease in young children.