“…HHV-6 (A and B variants) reactivation occurs in approximately 50% of bone marrow and solid organ transplant recipients. The consequences of HHV-6 reactivation include cytomegalovirus (CMV) reactivation, bone marrow suppression, central nervous system dysfunction, idiopathic pneumonitis, severe graft-versus-host disease, hepatitis fulminant liver failure and increased mortality (Chapenko et al, 2001;Caselly et al, 2007).…”