PCP cases were significantly associated with deficient type of MBL expression and CD4 count <200/μl, independent of sex, age, and log 10VL (aHR 7.93, 95% CI 2.19–28.67, p = 0.002; aHR 3.57, 95% CI 1.51–8.45, p = 0.004, respectively) (Table 3). The gene discussed is MBL2; the disease is pneumocystosis.