TABLE 2.

Comparison of epidemiological characteristics of the patients in the distinct HCV-4 clusters in The Netherlands^a

Characteristic	No. (%) of patients			P value
	C1	C2	C3
Sex				<0.001
Female	2 (4)	12 (27)	0
Male	44 (96)	32 (73)	26 (100)
Country of birth				<0.001
The Netherlands	6 (13)	25 (57)	21 (81)
Europe (excluding The Netherlands)	2 (4)	9 (20)	3 (12)
Egypt	32 (70)	0 (-)	0
Other	4 (9)	7 (16)	2 (8)
Unknown	2 (4)	3 (7)	0
Transmission route				<0.001
IDU	6 (13)	35 (80)	1 (4)
Transfusion	2 (4)	2 (5)	0
Sexual transmission, MSM	0	1 (2)	25 (96)
Sexual transmission, FSWb	1 (2)	0	0
Exposure in a country where HCV is endemic	34 (74)	0	0
Unknown	3 (7)	6 (14)	0
HIV coinfection				<0.001
Positive	4 (9)	8 (18)	24 (92)
Negative	32 (70)	32 (73)	2 (8)
Not tested	10 (22)	4 (9)	0
Total	46	44	26

^aThe patients in C1 were infected with HCV-4 subtype 4a, and those in C2 and C3 were infected with HCV-4 subtype 4d. The median ages of the patients in C1, C2, and C3 were 43 years (IQR, 38 to 48 years), 39 years (IQR, 34 to 45 years), and 41 years (IQR, 36 to 48 years), respectively (P = 0.12).

^bFSW, female sex worker.