Objective: This study aimed to analyze the clinical manifestations of human herpesvirus 6 (HHV-6) infection within 100 days after allogeneic hematopoietic stem cell transplantation (allo-HSCT) and to investigate the association of HHV-6 viral load with clinical outcomes as well as the effect of antiviral treatment on the course of HHV-6 infection. Methods: This retrospective study included patients who tested positive for HHV-6 within 100 days after allo-HSCT at the Peking University …