Whereas innate interferon (IFN) and natural killer (NK) cell responses are important in immediate control of CMV infection, adaptive T cell immune responses are important in both active infection and reactivation control phases (Crough and Khanna, 2009; Zelini et al., 2010; Reddehase, 2013; Muntasell et al., 2013). This evidence concerns the gene IFNA1 and cytomegalovirus infection.