Emerging Trends in CRF02_AG Variants Transmission Among Men Who Have Sex With Men in Spain

Efectividad del tratamiento antirretroviral combinado de gran actividad en eventos recurrentes de sida en una cohorte de seroconvertores al virus de la inmunodeficiencia humana

Resumen Introduccion La efectividad del tratamiento antirretroviral de gran actividad (TARGA) en la reduccion del tiempo al primer evento definitorio de sida ha sido demostrada por diversos estudios observacionales, pero el efecto en eventos recurrentes de sida no es tan evidente. Material y metodos Se dispone de 1.938 sujetos seroconvertores al VIH de la cohorte GEMES. Se ha utilizado una extension del modelo de Cox para analizar el tiempo desde la seroconversion a cada evento sida, que tiene en cuenta el tiempo entre sucesivos eventos y que permite que el riesgo de referencia cambie con el numero de paciente con sida previos. El calendario se dividio en tres periodos coincidiendo con la d…

Expansion of the CRF19_cpx Variant in Spain

Abstract Background HIV-1 CRF19_cpx, is a recombinant variant found almost exclusively in Cuba and recently associated to a faster AIDS onset. Infection with this variant leads to higher viral loads and levels of RANTES and CXCR4 co-receptor use. Objectives The goal of this study was to assess the presence of CRF19_cpx in the Spanish province of Valencia, given its high pathogenicity. Study design 1294 HIV-1 protease-reverse transcriptase (PR/RT) sequences were obtained in Valencia (Spain), between 2005 and 2014. After subtyping, the detected CRF19_cpx sequences were aligned with 201 CRF19_cpx and 66 subtype D sequences retrieved from LANL, and subjected to maximum-likelihood phylogenetic a…

The molecular epidemiology of HIV-1 in the Comunidad Valenciana (Spain): analysis of transmission clusters

AbstractHIV infections are still a very serious concern for public heath worldwide. We have applied molecular evolution methods to study the HIV-1 epidemics in the Comunidad Valenciana (CV, Spain) from a public health surveillance perspective. For this, we analysed 1804 HIV-1 sequences comprising protease and reverse transcriptase (PR/RT) coding regions, sampled between 2004 and 2014. These sequences were subtyped and subjected to phylogenetic analyses in order to detect transmission clusters. In addition, univariate and multinomial comparisons were performed to detect epidemiological differences between HIV-1 subtypes, and risk groups. The HIV epidemic in the CV is dominated by subtype B i…