Participants with the lower CD4 T cell count had a similar rate of any intestinal parasitic infection (36.2 %) and cryptosporidiosis (15.6 %) compared to those with a CD4 count ≥ 200 cells/μl, but with some type of diarrhea (parasitic infection, 35.6 %; cryptosporidiosis, 10.2 %). The gene discussed is CD4; the disease is parasitic intestinal disorder.