Former FDA chief Gottlieb: The U.S. is entering a 'sustained period' of 1,000 Covid deaths per day

“This is probably going to be the densest phase of the pandemic,” Dr. Scott Gottlieb, member of the boards of Pfizer and biotech company Illumina and former FDA commissioner, told CNBC's "Squawk Box" Tuesday. “We're probably going to see significant spread across the entire United States in a confluent epidemic… It's a very grim couple of months that we face.”