CD4 and graft versus host disease: Of note, the MMR vaccine is administered routinely to other immunosuppressed populations, including those with HIV infection (children age <5 years with CD4% >15% or older individuals with absolute CD4+ count >200 cells/mL) and allogeneic bone marrow transplant recipients (>2 years after transplant with no evidence of graft-versus-host disease and not currently receiving immunosuppressive agents; McLean et al., 2013, Tomblyn et al., 2009).