“…In regions as diverse as sub-Saharan Africa, North and South America, East Asia, the Caribbean and Europe, between 20% and 60% of sexually active serodiscordant couples have been found to practise unprotected vaginal and anal sex (Skurnick et al 1998, Van der Straten et al 1998, Buchacz et al 2001, Aidala et al 2006, Milam et al 2006, Stevens and Galvao 2007, Bradley et al 2008, Hernando et al 2009, Orengo-Aguayo and Pérez-Jiménez 2009, Reis and Gir 2009, Beyeza-Kashesya et al 2010, NIMH Multisite HIV/STD Prevention Trial for African American Couples Group 2010, Lau et al 2012). According to recent data from India, only 6% of serodiscordant couples used condoms consistently (Saggurti andMalviya 2009, UNAIDS 2009), a figure that raises the question of whether unprotected sex might be underreported by couples in other regions due to perceived social unacceptability or, as a study from Uganda suggested, due to negative attitudes among health workers (BeyezaKashesya et al 2009).…”