Estimation of HIV incidence among repeat anonymous testers in Catalonia, Spain.
A retrospective cohort study of 2124 repeat HIV testers attending at anonymous testing sites (ATS) of Catalonia between 1995 and 2001 registered 3273 person-years (PY) of follow-up and 76 seroconversions (incidence density of 2.32 per 100 PY; 95% CI: 1.83, 2.90). The highest HIV infection incidence was observed among heterosexual injection drug users (IDU) (9.25 per 100 PY; 95% CI: 6.77, 12.25) and the lowest was among heterosexual non-IDU (0.69 per 100 PY; 95% CI: 0.35, 1.24). In multivariate Cox regression, factors independently associated with seroconversion were men having sex with men, IDU, and having sex with a known HIV-infected person. In spite of some limitations, such results suggest that prevention interventions targeting specific groups attending at ATS in Catalonia should be prioritized.
Nascimento
Cristiane Murta Ramalho
CM
Center for Epidemiological Studies on HIV/AIDS in Catalonia, Hospital Universitari Germans Trias i Pujol, Badalona, Spain.
Casado
Maria Jesús
MJ
Casabona
Jordi
J
Ros
Rosa
R
Sierra
E
E
Zaragoza
Kati
K
Barberà
Nuria
N
de Vega
Xavier
X
Oliver
Carmen
C
D015492:AIDS Serodiagnosis; D000328:Adult; D035041:Anonymous Testing; D005260:Female; D015658:HIV Infections / Q000175:diagnosis / Q000453:epidemiology* / Q000635:transmission; D020010:Heterosexuality; D018451:Homosexuality, Male; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D012725:Sexual Behavior; D013030:Spain; D015819:Substance Abuse, Intravenous