Former FDA chief Scott Gottlieb on when a Covid-19 vaccine could be available to the public

The World Health Organization said Friday morning that they don't anticipate seeing broad-based coronavirus vaccinations available until 2021. Dr. Scott Gottlieb, member of the boards of Pfizer and biotech company Illumina and former FDA commissioner, joins "Squawk Box" to discuss when he believes the vaccine would be available to the broader public.