MICA and infection: Genes and alleles controlling the immune response such as MICA and their HLA ligands (MICA-HLA: MICA*002~HLA-B*35), and KIR (KIR: KIR3DS1-Bw4-80Ile; KIR2DS1+/C2++ KIR3DS1+/Bw4-80Ile+) increase the risk of infection (Ayo et al., 2015; Ayo et al., 2016).