title: Seroprevalence of HIV and HTLV in a representative sample of the Spanish population.
abstract: HIV and HTLV seroprevalence was determined by means of unlinked anonymous testing of 2144 sera, originally obtained from primary care patients by representative sampling of the Spanish population aged 15-39 years in 1996. HIV-1 seroprevalence was 4.3 per 1000 population in the 15-39 years age group [95% confidence interval (CI), 1.5-10.7] and 5.6 per 1000 (95% CI, 1.8-15.3) in the 20-39 years age group. Seroprevalence proved higher in males and urban residents. No antibodies to HIV-2 and HTLV-I were detected in any of the sera studied. However, presence of antibodies to HTLV-II was confirmed in one serum sample, while HTLV seroreactivity, though detected in another, could not be typed. The two HTLV-positive results equated to a seroprevalence of 1.9 per 1000 in the 20-39 years age group (95% CI, 0.3-8.6). HIV-I seroprevalence was consistent with previous estimates yielded by back-calculation. The level of HTLV seroprevalence found suggests endemicity.
authors.affiliation: National Centre for Epidemiology, Centro Nacional de Epidemiología, Madrid, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Castilla
authors.forename: I
authors.initials: I
authors.lastname: Pachón
authors.forename: M P
authors.initials: MP
authors.lastname: González
authors.forename: C
authors.initials: C
authors.lastname: Amela
authors.forename: L
authors.initials: L
authors.lastname: Muñoz
authors.forename: O
authors.initials: O
authors.lastname: Tello
authors.forename: I
authors.initials: I
authors.lastname: Noguer
authors.forename: F
authors.initials: F
authors.lastname: de Ory
authors.forename: P
authors.initials: P
authors.lastname: León
authors.forename: M
authors.initials: M
authors.lastname: Alonso
authors.forename: E
authors.initials: E
authors.lastname: Gil
authors.forename: A
authors.initials: A
authors.lastname: García-Sáiz
mesh_terms: D000293:Adolescent; D000328:Adult; D006800:Deltaretrovirus Infections / Q000097:blood / Q000453:epidemiology*; D005260:Female; D015483:HIV Antibodies / Q000097:blood; D015658:HIV Infections / Q000097:blood / Q000453:epidemiology*; D015497:HIV-1 / Q000276:immunology; D015498:HIV-2 / Q000276:immunology; D015481:HTLV-I Antibodies / Q000097:blood; D015482:HTLV-II Antibodies / Q000097:blood; D006801:Humans; D008297:Male; D016036:Seroepidemiologic Studies; D012737:Sex Factors; D013030:Spain / Q000453:epidemiology
chemical_list: D015483:HIV Antibodies; D015481:HTLV-I Antibodies; D015482:HTLV-II Antibodies