Table IDisease-5. Notified cases of hepatitis C infection among injecting drug users: number of IDUs and percentage of IDUs amongst all cases with known risk factor. Part (i) Notifications IDUs with hepatitis C


Country	Region	Ref.		1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002
Bulgaria	SOFIA	¹	cases IDU				50	78	162	241	178	483	254	412
			% IDU
Czech Republic	NATIONAL	¹	cases IDU					95	132	261	362	365	499	512
			% IDU
Denmark	NATIONAL	⁴	cases IDU	52	73	61	27	20	20	13	11	9	3	4
			% IDU	80	72	73	75	71	77	62	85	60	38	80
Estonia	NATIONAL	¹	cases IDU											98
			% IDU											82.3
Latvia	NATIONAL	³	cases IDU											27
			% IDU											18
Luxembourg	NATIONAL	¹	cases IDU				82	48	67	54	94	56	76
			% IDU
Hungary	NATIONAL	¹	cases IDU							14	8	5	5	3
			% IDU
Netherlands	NATIONAL	¹⁹	cases IDU								144	254	358
			% IDU								87	83	90
Poland	POMORSKIE Gdansk	³	cases IDU											100
			% IDU
Slovenia	NATIONAL	¹	cases IDU						2	2	2	5	4	0
			% IDU						67	67	40	100	67
Slovakia	BRATISLAVA REGION	^{4, 5}	cases IDU						45	54	36	44	36
			% IDU
Finland	NATIONAL	^1a	cases IDU							1015	979	908	804	674
			% IDU							93	94	93	93	91
Sweden	NATIONAL	³	cases IDU	3200	2674	2563	1828	1663	1545	1616	1495	1412	1269	1295
			% IDU	92.5	87.6	91.2	91.5	92.3	91.2	87.2	92.2	86.8	83	82.9
UK	ENGLAND AND WALES	^{23, 24}	cases IDU	57	175	386	815	1220	1432	1757	1999	1452	940	969
			% IDU	50	67	77	82	86	93	90	91	93	96	97
UK	SCOTLAND	²²	cases IDU	147	332	461	640	757	865	1187	1307	1257	1118	562
			% IDU	56.5	84.9	87.8	84.9	90.6	91.8	94.6	94.8	94.2	94.2	91.2
UK	NORTHERN IRELAND	²⁵	cases IDU			4	15	10	16	19	14	14	9	8
			% IDU			27	43	53	64	68	78	82	75	89

Notes:
For methods and definitions see [Methods and definitions - Drug-related infectious diseases]

Definitions of notifiable HCV infections differ strongly between countries, underreporting may be large and about 80 % of acute infections are asymptomatic. Therefore numbers should not be interpreted as an estimate of real incidence and they cannot be directly compared. Trends over time and the percent IDUs among all notified cases may be more comparable between countries, although these may also be strongly affected by differences in testing patterns between countries and over time. Data for most recent year(s) may be incomplete due to reporting delay.
The figures in the table should be interpreted in conjunction with the relevant notes and on the studies, given in [Table IDisease-5 Part (ii) Notes and comments]

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