Scott Gottlieb: We'll know more about prevalence of new Covid strains in the US soon

"I think we're going to know in the next week what the prevalence is of B 117 in Florida and San Diego," Dr. Scott Gottlieb, member of the boards of Pfizer and biotech company Illumina and former FDA commissioner, told CNBC's "Squawk Box" Wednesday. "We're doing enough sequencing right now that we can get an adequate measure of what the percent prevalence is."