Fauci on slowing COVID-19: People 'can't think of themselves in a vacuum'

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, sees COVID-19 as a formidable, global foe. But, Fauci tells The World's Marco Werman, he's cautiously optimistic that there will be more than one safe and effective vaccine available, likely manufactured by more than one country.