Seroprevalence and incidence study of HIVin transgender in Argentina, 2007
J.A. Sotelo1, C.P. Baudracco2
1Asociacion Travestis Transexuales y Transgénero de Argentina (ATTTA), Asesoria Tecnica (Technical Advising), Ciudad Autonoma, Argentina, 2Asociacion Travestis Transexuales y Transgénero de Argentina (ATTTA), Coordinacion (Coordination), Ciudad Autonoma, Argentina
Background: To determine the incidence and seroprevalence
of HIV in Transgender and its association with risk behaviour at a national
To analyze the social, demographic, cultural and
health service aspects that corresponds to the Transgender population.
Contribute to future preventive measures and
work together with NGO's to strengthen lines of action.
Methods: We included people that gave assent in 12
Argentine provinces who answered a structured questionnaire. They received
pre-HIV test counseling and realized serology. We assured anonymity by the
utilization of a barcode.
For calculating the incidence was applied the STARHS
algorithm - I = (n / m + n)) x (365.25 / T) x100.
Results: We analyzed data from
441 surveyed: 152 positive cases (P) confirmed by Western Blot, 276 negative
(N) and 13 indeterminate (I); Prevalence was 34.47% (95% CI 30.04-39.11).
80.73% of 276 N and
89.47% of the 152 P knew other sexually transmitted diseases (p = 0.019).
63.41% of N and
73.68% of P had used silicone injections (p = 0.03).
316/441 were sexual
workers (SW), 119 (37.66%) were P 187 N and 10 I.
35,4% of SW used
condom with his last client.
54.01% of SW N and
64.71% of SW P used drugs with clients (p = 0064).
HIV was 11.14 per 100 person-years (95% CI 4.98 to 20.99).
The annual incidence
was calculated using a window period of 170 days set for HIV-1 subtype B.
Conclusions: The prevalence was similar to the reported in
other Transgender populations (USA,
and was greater in the subgroup of Sexual workers. Knowledge of other sexually
transmitted diseases and use of silicone injections were significantly
associated with the positive condition (HIV+).
Vulnerability in sexual workers is associated
with the increased consumption of alcohol, drugs, social discrimination and
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