Risk factors and immunological characteristics of SARS-CoV-2 RNA re-positivity in convalescent COVID-19 Patients: A retrospective study
Purpose To investigate the incidence, clinical features, and risk factors for SARS-CoV-2 nucleic acid re-positivity in recovered COVID-19 patients. Methods We enrolled 441 convalescent COVID-19 patients from the rehabilitation ward of the Fifth Hospital of Shijiazhuang between January and April 2021. Based on nucleic a...