Diaz Franco, AsuncionJunquera, M LEsteban, VMartínez, BPueyo, ISuarez, JUreña, José ManuelVarela, J AVall, MDel Romero, JorgeSanz, IBelda, JBoronat, JosepGomez, PGual, FColomo, CLópez de Munain, JBalaguer, JLanda, M CLezaun, M ECámara, M CFernández, EBru, F JAlastrue, IOrdoñana, J Rde Armas, CAzpiri, M AGomez, LTrullén, JDiez Ruiz-Navarro, Mercedes2020-02-032020-02-032009-12-03Euro Surveill. 2009 Dec 3;14(48). pii: 19426.1560-7917http://hdl.handle.net/20.500.12105/9013In Spain, neither the HIV nor the STI national surveillance systems collect information on HIV/STI co-infection. However, there are two networks based on HIV/STI clinics which gather this data. We describe HIV prevalence in men who have sex with men (MSM) diagnosed with infectious syphilis and/or gonorrhoea in 15 STI clinics; and concurrent diagnoses of STI in MSM newly diagnosed with HIV in 19 HIV/STI clinics. In total, 572 MSM were diagnosed with infectious syphilis and 580 with gonorrhoea during 2005-2007. HIV prevalence among syphilis and gonorrhoea cases was 29.8% and 15.2% respectively. In the multivariate analysis, HIV/syphilis co-infection was associated with being Latin American; having a history of STI; reporting exclusively anal intercourse; and having sex with casual or several types of partners. HIV and gonorrhoea co-infection was associated with age older than 45 years; having no education or only primary education completed; and having a history of STI. In total, 1,462 HIV infections were newly diagnosed among MSM during 2003-2007. Of these, 31.0% were diagnosed with other STI at the same time. Factors associated with STI co-infection among new HIV cases in MSM were being Latin American; and having sex with casual partners or with both steady and casual partners. In Spain, a considerable proportion of MSM are co-infected with HIV and STI.engVoRhttp://creativecommons.org/licenses/by/4.0/AdultDisease OutbreaksHIV InfectionsHomosexuality, MaleHumansIncidenceMalePopulation SurveillanceRisk AssessmentRisk FactorsSpainAtribución 4.0 Internacional20003899144810.2807/ese.14.48.19426-en1560-7917Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletinopen access