Editors’ Note: In December 2019, people in Wuhan, a major city of 11 million people in central China, were found to be infected by a new coronavirus that may cause severe acute respiratory disease. At first, the Chinese government kept the virus secret from the world until it rapidly spread in Wuhan causing tens of thousands of people to become sick, many of whom died. On January 23, 2020, 2:00 am, the Chinese government announced that they were closing the city at 10:00 am. Fearing being locked in the city, an estimated five million Wuhan residents fled. Many of them were infected, hence beginning the great spread of the virus worldwide.