In December 2019, viral pneumonia caused by a novel beta-coronavirus (2019-nCoV) outbroke in Wuhan, China. Part of patients rapidly progress severe acute respiratory failure with substantial mortality, making it imperative to develop an efficient treatment for severe 2019-nCoV pneumonia besides the supportive care.~Intravenous immunoglobulin (IVIG) has been shown to improve the treatment effect and prognosis of severe infection over the past decades with its capacity of proving passive immunity and anti-inflammatory, immunomodulatory effect. We hypothesized that IVIG therapy would improve the prognosis of severe and critically ill patients with 2019-nCoV.~This single-center, randomized, open-label, controlled trial will evaluate the efficacy and safety of IVIG therapy in patients with severe or critically ill 2019-nCoV respiratory disease.
In this single-center, randomized, open-label, controlled study, the investigators will evaluate the efficacy and safety of Intravenous Immunoglobulin (IVIG) in combination with standard care for severe 2019 novel coronavirus (2019-nCoV) pneumonia.