SOT recipients (kidney, liver and heart transplant) presenting CMV infection or disease were eligible for inclusion if they were ≥18 years of age and presented a positive CMV antigenemia (pp65) defined as ≥ 20positive cells/105 peripherical blood mononuclear cells (PBMC). Patients excluded were those with severe CMV tissue invasive disease, unable to receive oral medication, absolute neutrophil counts less than 500/ mm3, platelets <25000 platelets/mm3, Hemoglobin< 80g/l or estimated glomerular filtration rate< 10 mL/min (according to the Cockcroft-Gault formula).