Understanding of corona virus disease 2019

Corona Virus Disease 2019(COVID-19) is a contagious disease with respiratory symptoms as the main manifestation that has recently occurred worldwide. This disease poses a major threat to the lives of people in China and the world. The contagiosity of Severe Acute Respiratory Syndrome Coronavirus 2(SARS-CoV-2) is stronger than those of SARS-CoV and MERS-CoV, which is one of the biggest characteristics of the pathogen, and the disease progresses rapidly after infection with severe harmfulness. Scientists in China and around the world have made great efforts to understand the disease. This article aims to sort out the knowledge on the disease and improve the clinicians' initial understanding on the disease.