SciELO - Scientific Electronic Library Online

 
vol.22 número1Perfiles genéticos (IS6110) y patrones de resistencia en aislamientos de M. tuberculosis de pacientes con tuberculosis pulmonar. Lima Sur, PerúConsumo de alimentos según condición de pobreza en mujeres en edad fértil y niños de 12 a 35 meses de edad índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

  • Não possue artigos citadosCitado por SciELO

Links relacionados

  • Não possue artigos similaresSimilares em SciELO

Compartilhar


Revista Peruana de Medicina Experimental y Salud Publica

versão impressa ISSN 1726-4634

Resumo

LAGUNA-TORRES, V. Alberto  e  GRUPO DE TRABAJO DE GENOTIPIFICACION DE VIH EN SUDAMERICA et al. Distribución de los subtipos del VIH-1 en nueve países de América del Sur, 1995-2002. Rev. perú. med. exp. salud publica [online]. 2005, vol.22, n.1, pp.12-17. ISSN 1726-4634.

Objectives: To determine human immunodeficiency virus type 1 (HIV-1) subtype distribution, and the presence of recombinant strains in Argentina, Bolivia, Colombia, Chile, Ecuador, Paraguay, Peru, Uruguay, and Venezuela using epidemiological and genotyping studies. Materials and Methods: Participants in the studies performed in nine countries were included, amongst them female sex workers, men who have sex with men (MSM), HIV-positive individuals, pregnant women, and patients with tuberculosis (TB) were included. Envelope-base heteroduplex mobility assay (env HMA) testing was used, as well as ProRT, complete sequencing, or both for determining HIV-1 subtypes. Results: 3081 HIV positive individuals were identified (out of 42 290 volunteers), prevalences from less than 1% to 29% in the different populations studied, and it was higher among MSM. 1654 samples (54%) underwent genotyping. B subtype was found in 1380 (83%) samples, F subtype was found in 218 (13%) samples, and A and C subtypes were found in 0,1% and 0,4%, respectively. BF recombinant serotypes were found in 39 samples (2%), and CRF01_AE (0,1%), CRF17_BF (0,4%), and CRF02_AG (0,1%) were also found. In Venezuela, Colombia, Ecuador, Peru, Bolivia, and Chile (Andean countries) subtype B predominated, while in Argentina, Uruguay, and Paraguay there was a high frequency of F subtype. Conclusions: In most Andean countries, HIV-1 epidemic concentrated among MSM, who are predominantly infected with B subtype. F subtype is more frequent among female sex workers in Argentina and Uruguay. This is useful information in order to implement prevention plans and future vaccine tests in this region.

Palavras-chave : HIV-1; genotyping; HIV subtypes; South America.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons