HLA-A*24 was associated with infection, HLA-A*34 was increased in the control group against symptomatic disease, HLA-B*07, B*15, B*38, B*, C*03, and DR*11 were increased in the cohabitants group against controls, and HLA-B*44 was increased in the control group against cohabitants group. This evidence concerns the gene HLA-B and infection.