In December 2019, Wuhan city, the capital of the Hubei province in China, became the center of a pneumonia outbreak of unknown cause. By Jan 7, 2020, Chinese scientists had isolated a novel coronavirus, also known as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2; previously known as 2019-nCoV), from these patients with the virus-infected pneumonia.[1] [2]