Specific KIR genotypes, genes or alleles are associated with differential responses to a variety of infectious diseases (Gao et al. 2010; Hirayasu et al. 2012; Khakoo et al. 2004; Knapp et al. 2010; Martin et al. 2002, 2007; Seich al Basatena et al. 2011). This evidence concerns the gene KIR3DL1 and infectious disease.