Table 2.

Prevalence of CMV or EBV infection in patients with hematological disorders.

Virus	Patient's disease	Country/ City	Cases (n)	Viral prevalence	Reference
CMV	Lymphoid, myeloid hematological malignancies and other hematological diseases	Hungary, Szeged	204	75.5%	Piukovics et al. 2017 [64]
	Leukemia	Egypt, Cairo	50	36.0% (in serum) 20.0% (in WBCs)	Loutfy et al. 2017 [62]
	Thalassemia	Iran, Yazd	96	94.1%	Moghimi et al. 2015 [65]
	Sickle cell disease	Brazil, Ribeirão Preto	144	13.9%	Slavov et al. 2015 [66]
	Beta-thalassemia major		39	7.7%
	Sickle-cell anemia, cancer, hemophilia, hemoglobinopathy, and other types of anemia	Brazil, Bahia	470	89.4%	De Matos, Meyer and Lima, 2011 [41]
	Hemodialysis patients	Turkey, Antakya	255	99.6%	Ocak et al., 2006 [81]
	Hemophilia	Brazil, São Paulo	100	25%	Nogueira et al. 2000 [67]
EBV	Hematological malignancies	Croatia, Zagreb	103	91.2%	Beader et al. 2018 [68]
	Hemodialysis patients		170	97.7%
	ALL	China, Qingdao	110	40.9%	Guan et al. 2017 [69]
	AML		75	25.3%
	Leukemia	Egypt, Cairo	50	2.0% (in serum) 28.0% (in WBCs)	Loutfy et al. 2017 [62]
	Childhood B non-Hodgkin lymphoma	Brazil, Rio de Janeiro	35	68.5%	Klumb et al. 2004 [70]
	ANKL	New Zealand, Auckland	5	100%	Ruskova, Thula and Chan, 2004 [71]

ALL: acute lymphoblastic leukemia; CLL: chronic lymphocytic leukemia; ANKL: aggressive natural killer-cell leukemia.