Covid-19 pandemic 'will be over by January one way or the other,' says former FDA chief Scott Gottlieb

Dr. Scott Gottlieb, member of the boards of Pfizer, Tempus and biotech company Illumina and former FDA commissioner, tells CNBC's "Squawk Box" he believes the Covid-19 pandemic will end within six months either because there will be widespread access to a vaccine or because enough people will have contracted the illness to the point where the virus stops "spreading efficiently."