Since December 2019, patients with unexplained pneumonia have appeared in some medical institutions in Wuhan, China. Nucleic acid testing was completed on January 10, 2020, which was confirmed to be caused by 2019-novel coronavirus. In 2020, the World Health Organization(WHO) named the virus 2019-novel coronavirus(2019-nCoV). The WHO announced that the pneumonia caused by 2019-nCoV is officially called COVID-19. Today, more than 70,000 cases have been confirmed and more than 2,000 patients have died.
At present, the epidemiological characteristics, laboratory indicators, imaging features and clinical treatment effects of COVID-19 should be reported, but the sample size is small. Large sample studies are still needed to further confirm COVID-19 's disease progression, clinical characteristics, disease severity and treatment effects, so as to provide a scientific basis for future clinical treatment. Therefore, it is particularly important to further review the relationship between the characteristics and prognosis of such patients.
