RecruitingBiological interventionCD45RA-depleted DLI for the Treatment of Refractory/Persistent Viral Infections After Haploidentical TransplantationThe goal of this clinical trial is to learn whether giving patients special donor immune cells (called "CD45RA Depleted DLI") can help treat viral infections that have not improved with standard antiviral drugs. These infections occur after a stem cell transplant. The study will also look at the safety of this treatment.