How WHO says Americans should react amid COVID-19 pandemic

The World Health Organization (WHO) has declared the novel coronavirus outbreak to be a global pandemic. The illness has infected about 120,000 people worldwide and claimed 4,400 lives, and public health officials both within the U.S. and abroad are warning that the crisis will get worse. Amna Nawaz reports, and Judy Woodruff talks to WHO’s Dr. Margaret Harris about how people should be preparing.