Former FDA chief Scott Gottlieb on how long we'll be wearing masks

Dr. Scott Gottlieb, member of the boards of Pfizer and biotech company Illumina and former FDA commissioner, told "Squawk Box" Tuesday that it's possible the population will still be wearing masks into the end of 2021. He added that he is hopeful that "we're going to have a broad toolbox, not just with a vaccine" to treat the virus.