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Título : Prevalences, genotypes, and risk factors for HIV transmission in south america
Autor : Guevara Espinoza, Ángel Gustavo
Montano, Silvia M.
Sánchez, Jose L.
Laguna Torres, Alberto
Cuchi, Paloma
Ávila, María M.
Weissenbacher, Mercedes
Serra, Margarita
Viñoles, José
Russi, Jose C.
Aguayo, Nicolas
Galeano, Adolfo H.
Gianella, Alberto
Andrade, Ronald
Arredondo, Anabella
Ramirez, Eugenio
Acosta, Maria E.
Alava, Aracely
Montoya, Orlando
Palabras clave : VIH
PREDOMINIO
FACTORES DE RIESGO
EPIDEMIOLOGIA MOLECULAR
GENOTIPOS
VIGILANCIA
TRABAJADORAS SEXUALES
Fecha de publicación : 2005
Editorial : Philadelphia: LWW Business
Citación : Guevara Espinoza, Angel Gustavo y otros (2005). Prevalences, genotypes, and risk factors for HIV transmission in south america. Journal of Acquired Immune Deficiency Syndromes 40: 57-64
Resumen : HIV cross-sectional studies were conducted among high-risk populations in 9 countries of South America. Enzymelinked immunosorbent assay screening and Western blot confirmatory testing were performed, and env heteroduplex mobility assay genotyping and DNA sequencing were performed on a subset of HIV-positive subjects. HIV prevalences were highest among men who have sex with men (MSM; 2.0%–27.8%) and were found to be associated with multiple partners, noninjection drug use (non-IDU), and sexually transmitted infections (STIs). By comparison, much lower prevalences were noted among female commercial sex workers (FCSWs; 0%–6.3%) and were associated mainly with a prior IDU and STI history. Env subtype B predominated among MSM throughout the region (more than 90% of strains), whereas env subtype F predominated among FCSWs in Argentina and male commercial sex workers in Uruguay (more than 50% of strains). A renewed effort in controlling STIs, especially among MSM groups, could significantly lessen the impact of the HIV epidemic in South America.
URI : http://www.dspace.uce.edu.ec/handle/25000/14448
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