Incidence of non-B subtypes of HIV-1 in Galicia, Spain: high frequency and diversity of HIV-1 among men who have sex with men

M T Cuevas; A Fernández-García; A Sánchez-García; M González-Galeano; M Pinilla; M Sánchez-Martínez; V García; L Pérez-Álvarez; Collective Study group of HIV-1 newly diagnosed patients in Galicia, Spain

doi:10.2807/ese.14.47.19413-en

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Incidence of non-B subtypes of HIV-1 in Galicia, Spain: high frequency and diversity of HIV-1 among men who have sex with men
M T Cuevas¹ , A Fernández-García¹ , A Sánchez-García¹ , M González-Galeano¹ , M Pinilla¹ , M Sánchez-Martínez¹ , V García¹ , L Pérez-Álvarez¹ , Collective Study group of HIV-1 newly diagnosed patients in Galicia, Spain²
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Affiliations: ¹ HIV Biology and Variability Department, CNM, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain ² Members of the Study group are listed at the end of the article

Correspondence:
L Pérez-Álvarez
lperezal isciii.es
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Citation style for this article: Cuevas M T, Fernández-García A, Sánchez-García A, González-Galeano M, Pinilla M, Sánchez-Martínez M, García V, Pérez-Álvarez L, Study group of HIV-1 newly diagnosed patients in Galicia, Spain Collective. Incidence of non-B subtypes of HIV-1 in Galicia, Spain: high frequency and diversity of HIV-1 among men who have sex with men. Euro Surveill. 2009;14(47):pii=19413. https://doi.org/10.2807/ese.14.47.19413-en Received: 29 Sept 2009

Abstract

An increase in HIV transmission among men who have sex with men (MSM) has been reported in eight regions of Spain from 2003 to 2007. In order to study the incidence of HIV-1 genetic forms in Galicia, northwest of Spain, in particular the spread of HIV-1 variants among MSM, 93 newly diagnosed HIV-1 patients, including those with acute and recently acquired infections, were studied for a year from August 2008 to August 2009. Thirty eight (41%) were MSM. Of them, nine (24%) were infected by non-B viruses, including seven different genetic forms. The analysis of transmission clusters showed that 23 (60%) MSM grouped in different clusters and mostly in large clusters. Resistance mutations were detected in six (16%) MSM.