Married couples and those in stable relationships account for the highest percentage of new HIV/Aids infections in Kenya . UNAIDS (United Nations Programme on HIV/AIDS) 2010 Report on the global AIDS epidemic confirms that the decline in new HIV infections over the past 10 years is clearly linked with changes in behaviour and social norms together with increased knowledge of HIV . A report by Population Action International concerning HIV in marriage, in its recommendations, states that, “Many steps can be taken to reduce the vulnerability of married women and men to HIV infection, including stronger policies, better prevention strategies, and changes in harmful social norms.” It specifically goes ahead to propose “Educating men and women about social norms and how those norms negatively impact men and women’s health,” as one of the first steps to reducing HIV infection in marriages . This indicates that wrong perceptions (propagated by harmful social norms in Kenya) and lack of knowledge on HIV/AIDS is a contributing factor to spread of the infection. According to KAIS 2012 – Kenya AIDS Indicator Survey 2012 – report despite the increase in HIV testing levels, 53% of survey participants found to be infected during the survey were not aware of their HIV infection. The aim of this research paper, therefore, is to show ways in which new HIV infections can be reduced among married couples. The research project used the KAIS 2012 data, in which a sample of adults aged between 15 to 64 years was interviewed. The data was analyzed using R-software version 3.1.0, and report presented inform of tables and graphs.