Document 2577 DOCN M94A2577 TI Heterogeneity of HIV epidemic in the Italian regions. DT 9412 AU Cantoni M; Grossi P; Mariotto A; Verdecchia A; Istituto Superiore di Sanita, Roma, Italy. SO Int Conf AIDS. 1994 Aug 7-12;10(1):272 (abstract no. PC0009). Unique Identifier : AIDSLINE ICA10/94369998 AB OBJECTIVE: The AIDS epidemic, as with any infectious disease epidemics, encloses clusters of subepidemics separated geographically. The objective is to characterize the Italian AIDS epidemic into regional subepidemics and highlight any differences in order to adopt more efficient local prevention and health care strategies. METHOD: To compare the regional patterns of the epidemic, standardized AIDS rates, with reference to the regional population by age, were estimated for each calendar year (1983-1993), region and risk group. RESULTS: As a first regional division of the AIDS epidemic in Italy, the country could be divided into the North-Central region, which has a high incidence rate and prevalence, and the Southern region where the epidemic is at lower levels. However, in the North-Central region, the epidemic is not uniformly distributed, the highest incidence rates in 1992 being localized around large towns: Milan and surroundings (15 per 100,000) and Rome (13 per 100,000) and the harbour towns: Genoa (18 per 100,000), Livorno (13 per 100,000) and Cagliari (on the island of Sardegna) (12 per 100,000). There is heterogeneity however, with respect to ways of transmission. In the above-mentioned, high incidence regions, the epidemic occurs mainly between IVDU's: Cagliari (73%), Genoa (69%), Milan (63%) and Roma (61%), whereas in some of the lower-incidence regions the epidemic is characterized by having a considerable number of homosexuals cases, for example, in the Toscany region with an AIDS incidence rate of 7 per 100,000 about 40% are homosexuals. Among heterosexuals the AIDS epidemic is at relatively low levels in Italy (about 1 per 100,000), with the exception of Rimini, a turistic, sea resort, where this group represents 21% of all local AIDS cases with an incidence rate of 4 per 100,000 by far the largest in the country. CONCLUSIONS AND DISCUSSION: The method allows the comparison of rates rather than counts which is important since, for example, the small number of AIDS cases in Sardegna would not in itself indicate a high incidence rate, as it does when referred to its small population. This method can correctly assess the importance of the epidemic in the different groups. As a consequence of the heterogeneity the course of the epidemic in each area is expected to continue at different rates. DE Acquired Immunodeficiency Syndrome/*EPIDEMIOLOGY/TRANSMISSION *Disease Outbreaks Human Incidence Italy/EPIDEMIOLOGY Risk Factors Sex Behavior Substance Abuse, Intravenous/COMPLICATIONS MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).