Coronavirus disease (Covid-19) is an infectious disease caused by the SARS-CoV-2 virus that has recently appeared in China and had caused a million of infections and thousands of deaths. This epidemic has spread widely, such as wildfire and lethality in European countries and the United States of America. Those countries have faced this epidemic in scientific ways, and have taken measures of regional isolation and quarantine, as well as experimental and clinical research in pursuit of a successful drug or vaccine.