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HIV seroprevalence in a London same-day testing clinic.

Bor, Robert; Lipman, Marc; Elford, Jonathan; Murray, Derval; Miller, Riva; Griffiths, Paul; Janossy, George; Johnson, Margaret
AIDS: May 1994

Objectives: To determine the prevalence of HIV infection among people attending a confidential, non-genitourinary medicine based testing clinic that provides HIV antibody test results on the day of consultation.

Methods: Retrospective analysis of data collected on 2635 individuals attending the Same-Day HIV Testing Clinic at the Royal Free Hospital, London between March 1992 and February 1993.

Results: A total of 1612 men and 1023 women were tested for HIV antibody. The primary risk for HIV infection was heterosexual (71.7%; 1889 out of 2635) and homosexual contact (24.5%; 646 out of 2635). Fifty-four individuals were given positive HIV test results (46 men, median age 34 years; eight women, median age 27 years). Overall HIV seroprevalence was 2.0% (95% confidence interval, 1.5-2.5). HIV seroprevalence was highest among homosexual men (6.5%; 41 out of 635) and injecting drug users (5.7%; four out of 70). The rates for heterosexual men and women were 0.2% (two out of 915) and 0.7% (seven out of 974), respectively. Of the 54 individuals who were HIV-antibody-positive, 44 were Centers for Disease Control and Prevention stage II/III, eight stage IV and one was tested at the time of seroconversion (stage I; data were not available for one patient). Of the total numbers attending this clinic 27% (702 out of 2635) had previously been tested and received a negative result. Of a total of 54 HIV-antibody-positive individuals, 40% (21) had previously received a negative test result.

Conclusions: The data suggest that seroprevalence amongst homosexual men attending a designated HIV testing clinic in London is lower than that reported by genitourinary clinic based testing sites. The large number of repeat testers who subsequently became infected with HIV suggests that there is a population requiring specific targeting for HIV risk reduction.

(C) Lippincott-Raven Publishers.