This is the same middle-aged man presented in the previous clinical vignette. He had undergone allogeneic stem cell transplantation (allo-HSCT) for underlying B-cell leukemia, with subsequent acute graft-versus-host disease (GVHD) of the liver. This was complicated 6 months later by RSV pneumonitis as previously described. His recovery was slow and required oxygen support even 3 […]