Summarize the Etiology and Epidemiology Characteristics of the New Coronavirus

Until May 16th, there are more than four million people who have been confirmed of the Covid-19 virus in the whole world and 311,739 of total deaths. The virus caused disastrous effects in the economy around the whole world, destroying small businesses and the stock market, ruining international transportation, devastating the morale of the people and prohibiting people from interacting and socializing. Considering these huge impacts that the virus made, on March, 12, 2020, the World Health Organization (WHO) characterized the Covid-19 caused by the Sars-CoV-2 virus as a global pandemic. There is not an effective vaccination or specific medicine to cure the disease. The most effective way to slow down the transmission is early detection, isolation of new carriers and operating proper treatment to patients. Thus, the research on the physical properties and clinical characteristics of the Covid-19 become significantly important. To prepare for the future prevention, this paper summarizes the overall treatment of the virus, mainly through the virus's origin, etiology, epidemiology, and clinical symptoms to inform readers more about the Covid-19, eliminate misunderstanding and bias to the virus, invoke the sense of self-protection and finally use scientific and logical methods to overcome this world-wide pandemic.