Epidemiological Fact Sheet on HIV/AIDS and Sexually Transmitted Infections: Italy (UNAIDS, 2000, 12 p.): Reported AIDS cases

Epidemiological Fact Sheet on HIV/AIDS and Sexually Transmitted Infections: Italy (UNAIDS, 2000, 12 p.)

		(introduction...)
		Country Information
		Estimated number of people living with HIV/AIDS
		Assessment of epidemiological situation - Italy
		HIV sentinel surveillance
		Maps of HIV sentinel sites
		Reported AIDS cases
		Curable Sexually Transmitted Infections (STIs)
		Health service indicators
		Knowledge and behaviour
		Sources
		Annex: HIV Surveillance data by site

Reported AIDS cases

AIDS cases by year of reporting

1979	1980	1981	1982	1983	1984	1985	1986	1987	1988	1989	1990	1991	1992	1993	1994	1995	1996	1997	1998	1999	Total	Unkn
			0	1	0	17	28	453	1582	2300	2919	3371	4147	4533	5440	6062	5378	3782	2484	2200	45605	908

Date of last report: 31.12.99

Following WHO and UNAIDS recommendations, AIDS case reporting is carried out in most countries. Data from individual AIDS cases is aggregated at the national level and sent to WHO. However, case reports come from surveillance systems of varying quality. Reporting rates vary substantially from country to country and low reporting rates are common in developing countries due to weaknesses in the health care and epidemiological systems. In addition, countries use different AIDS case definitions. A main disadvantage of AIDS case reporting is that it only provides information on transmission patterns and levels of infection approximately 5-10 years in the past, limiting its usefulness for monitoring recent HIV infections.

Despite these caveats, AIDS case reporting remains an important advocacy tool and is useful in estimating the burden of HIV-related morbidity as well as for short-term planning of health care services. AIDS case reports also provide information on the demographic and geographic characteristics of the affected population and on the relative importance of the various exposure risks. In some situations, AIDS reports can be used to estimate earlier HIV infection patterns using back-calculation. AIDS case reports and AIDS deaths have been dramatically reduced in industrialized countries with the introduction of HAART (Highly Active Anti-Retroviral Therapy).

AIDS cases by mode of transmission

Hetero: Heterosexual contacts.
Homo/Bi: Homosexual contacts between men.
IDU: Injecting drug use. This transmission category also includes cases in which other high-risk behaviours were reported, in addition to injection of drugs.
Blood: Blood and blood products.
Perinatal: Vertical transmission during pregnancy, birth or breastfeeding.
NS: Not specified/unknown.

Sex	Trans. Group	<96	1996	1997	1998	1999	Unkn	Total	%
All	Total	30853	5378	3782	2484	2200	908	45605
	Hetero	4253	1075	761	549	685	37	7360	16.1
	Homo/Bi	4652	839	543	433	360	202	7029	15.4
	IDU	20502	3216	2140	1213	1003	582		62.8
	Blood	561	82	32	15	20	44	754	1.7
	Perinatal	464	61	34	38	12	36	645	1.4
	Other Known	0	0	0	0	0	0	0	0.0
	Unknown	421	105	272	236	120	7	1161	2.5
Male	Total	24349	4057	2845	1909	1696	731	35587
	Hetero	2230	518	396	320	421	21	3906	11.0
	Homo/Bi	4652	839	543	433	360	202	7029	19.8
	IDU	16515	2548	1684	967	811	452		64.6
	Blood	423	57	21	13	11	38	563	1.6
	Perinatal	224	32	11	21	7	15	310	0.9
	Other Known	0	0	0	0	0	0	0	0.0
	Unknown	305	63	190	155	86	3	802	2.3
Female	Total	6504	1321	937	575	504	177	10018
	Hetero	2023	557	365	229	264	16	3454	34.5
	Homo/Bi	0	0	0	0	0	0	0	0.0
	IDU	3987	668	456	246	192	130	5679	56.7
	Blood	138	25	11	2	9	6	191	1.9
	Perinatal	240	29	23	17	5	21	335	3.3
	Other Known	0	0	0	0	0	0	0	0.0
	Unknown	116	42	82	81	34	4	359	3.6
NS	Total	0	0	0	0	0	0	0
	Hetero	0	0	0	0	0	0	0	0.0
	IDU	0	0	0	0	0	0	0	0.0
	Blood	0	0	0	0	0	0	0	0.0
	Perinatal	0	0	0	0	0	0	0	0.0
	Other Known	0	0	0	0	0	0	0	0.0
	Unknown	0	0	0	0	0	0	0	0.0

Aids cases by age and sex

Sex	Age	<96	1996	1997	1998	1999	Unkn.	Total	%
All	All	30853	5378	3782	2484	2200	908	45605
	0-4	382	30	18	26	10	38	504	1.1
	5-9	87	23	14	6	5	1	136	0.3
	10-14	37	12	3	7	2	4	65	0.1
	15-19	83	8	7	5	2	12	117	0.3
	20-24	1707	114	89	39	37	209	2195	4.8
	25-29	8347	715	385	241	204	287	10179	22.3
	30-34	10014	1925	1196	711	564	149	14559	31.9
	34-39	4983	1314	1028	692	600	83	8700	19.1
	40-49	3371	837	687	463	480	82	5920	13.0
	50-59	1264	288	243	191	196	34	2216	4.9
	60+	576	112	112	103	100	9	1012	2.2
	NS	2	0	0	0	0	0	2	0.0
Male	All	24349	4057	2845	1909	1696	731	35587
	0-4	179	14	6	18	7	16	240	0.7
	5-9	48	13	5	2	2	1	71	0.2
	10-14	29	7	1	3	1	3	44	0.1
	15-19	62	5	5	3	0	9	84	0.2
	20-24	1110	53	51	19	18	149	1400	3.9
	25-29	6161	430	218	152	120	228	7309	20.5
	30-34	8040	1433	866	515	415	133	11402	32.0
	34-39	4170	1058	819	554	480	79	7160	20.1
	40-49	2939	706	586	396	404	75	5106	14.3
	50-59	1129	251	194	164	169	30	1937	5.4
	60+	480	87	94	83	80	8	832	2.3
	NS	2	0	0	0	0	0	2	0.0
Female	All	6504	1321	937	575	504	177	10018
	0-4	203	16	12	8	3	22	264	2.6
	5-9	39	10	9	4	3	0	65	0.6
	15-19	8	5	2	4	1	1	21	0.2
	10-14	21	3	2	2	2	3	33	0.3
	20-24	597	61	38	20	19	60	795	7.9
	25-29	2186	285	167	89	84	59	2870	28.6
	30-34	1974	492	330	196	149	16	3157	31.5
	34-39	813	256	209	138	120	4	1540	15.4
	40-49	432	131	101	67	76	7	814	8.1
	50-59	135	37	49	27	27	4	279	2.8
	60+	96	25	18	20	20	1	180	1.8
	NS	0	0	0	0	0	0	0	0.0
NS	All	0	0	0	0	0	0	0
	0-4	0	0	0	0	0	0	0	0.0
	5-9	0	0	0	0	0	0	0	0.0
	10-14	0	0	0	0	0	0	0	0.0
	15-19	0	0	0	0	0	0	0	0.0
	20-24	0	0	0	0	0	0	0	0.0
	25-29	0	0	0	0	0	0	0	0.0
	30-34	0	0	0	0	0	0	0	0.0
	34-39	0	0	0	0	0	0	0	0.0
	40-49	0	0	0	0	0	0	0	0.0
	50-59	0	0	0	0	0	0	0	0.0
	60+	0	0	0	0	0	0	0	0.0
	NS	0	0	0	0	0	0	0	0.0