The rs28371702 (AC) of CYP2D6 was significantly associated with increased odds of an individual clearing infection (OR: 2.58, 95% CI: 1.20, 5.55) and the homozygous rs28371702 (CC) was significantly associated with increased odds of an individual not clearing infection (OR: 2.36, 95% CI: 1.11, 5.04). This evidence concerns the gene CYP2D6 and infection.