Fig. 2From: Co-infections of human herpesviruses (CMV, HHV-6, HHV-7 and EBV) in non-transplant acute leukemia patients undergoing chemotherapySingle infections and co-infections detected in acute leukemia patients. Venn diagram shows the number of positive samples for each HHVs. Numbers of single infections can be seen at the ends of the diagram (N = 120), while co-infections can be seen at overlapping areas (N = 50)Back to article page