Advances in immunotherapy for COVID-19

COVID-19 caused by 2019-nCoV has posed a great threat to global public health The immune system is essential for 2019-nCoV control and clearance, but excessive immune responses could result in inflammatory lung injury and other organ damages Moreover, therapies against the abnormal immune responses to COVID-19 are controversial and of concern This review summarized and analyzed the abnormal immune responses to 2019-nCoV infection and the potential immunotherapy, aiming to better understand the role of immunoregulation in COVID-19 and provide ideas for future research on COVID-19 immunotherapy