Figure 1.

Pattern of tissue-invasive cytomegalovirus (CMV) disease in kidney (KT) recipients during preemptive therapy. A plain figure without borderline lying on the patient number means a type of preceding CMV antigenemia: a circle, no preceding CMV antigenemia; a triangle, preceding nonsignificant CMV antigenemia (< 50/200,000 cells); a rectangle, preceding significant CMV antigenemia (≥ 50/200,000 cells). A plain figure with a thick borderline means time of diagnosis and type of tissue-invasive CMV disease. Numbers written below plain figures of KTA1 and KTA2 means time of diagnosis of tissue-invasive CMV diseases developing more than 180 days post-KT.