1. High-Risk Sexual Practices Contribute to HIV-1 Double Infection Among Men Who Have Sex with Men in Madrid
- Author
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Félix Docando, Isabel Olivares, Jose L. Vicario, Concepción Casado, Mar Vera, Maria Pernas, Cecilio López-Galíndez, Raquel Alenda, Carmen Rodríguez, Oskar Ayerdi, Pilar Jiménez, Ángel Zaballos, Jorge del Romero, Marta Rava, Ministerio de Economía y Competitividad (España), Instituto de Salud Carlos III, and European Regional Development Fund
- Subjects
Male ,Sexual Behavior ,Immunology ,Sexually Transmitted Diseases ,Human immunodeficiency virus (HIV) ,HIV Infections ,Human sexuality ,medicine.disease_cause ,Men who have sex with men ,Sexual and Gender Minorities ,Risk-Taking ,Risk practices ,Risk Factors ,Virology ,Prevalence ,medicine ,Humans ,MSM ,HIV double infection ,Homosexuality, Male ,Phylogeny ,Madrid ,business.industry ,virus diseases ,Double infection ,Viral genetic variability ,Sexual Partners ,Infectious Diseases ,Cohort ,Sexual partners ,HIV-1 ,business ,Demography - Abstract
Data on the prevalence of double infection (DI) in HIV individuals are lacking in Spain. To fill this gap, we analyzed the prevalence of DI in a cohort of men who have sex with men (MSM) and examined factors contributing to DI. We selected 81 MSM attending Centro Sanitario Sandoval, a sexually transmitted diseases clinic in Madrid. We obtained by ultra-deep sequencing the proviral sequences in gag and env genes and performed a phylogenetic analysis for the identification of DI. Clinical, behavioral, host, and viral factors were studied for its association with DI. We detected six individuals with DI and one case of superinfection with a global prevalence of 8.6%. The genetic distance among the subtype B viruses in monoinfected individuals (24.4%) was lower than the distance between the two viruses in subtype B DI individuals (29.5%). Individuals with a high number of sexual contacts (>25 partners/year) had an 8.66 times higher risk of DI (p = .017). In this MSM cohort the prevalence of HIV DI was estimated at 8.6%. DI was strongly associated with the number of sexual partners. Because of the pathogenic consequences of HIV DI, this high prevalence should promote public health programs targeted at high-risk population such as MSM for the control of HIV infection and DI. HIV DI should be considered for a better clinical management of these individuals. Work in Centro Nacional de Microbiologia (Instituto de Salud Carlos III) was supported by grant SAF-2016-77894-R from Ministerio de Economia y Competitividad (MINECO, Spain), grant PI 13/02269 from Fondo de Investigación Sanitaria (FIS-Instituto de Salud Carlos III, Spain) and in part by the RIS-RETIC grants RD12/0017/0028 and RD16CIII/0002/0005 funded by the Intituto de Salud Carlos III-European Regional Development Fund. M.P. has a contract of RIS-RETIC RD16CIII/0002/0005. Sí
- Published
- 2020
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