Figure 3. Median CD4 count and plasma HIV RNA level by helminth species.

^aNo HIV RNA data were available for S. stercoralis or S. mansoni. The study aimed to recruit pre-HAART individuals with CD4 counts greater than 250 cells. Participants were allowed to give CD4 count measurements from their prior HIV Care and Treatment Clinic visit if it fell within three months of the screening date. However, when these CD4 counts were confirmed, many people had lower CD4 counts than recorded by history. Eighty-nine participants had CD4 counts between 0–199 cells/µL³ and 256 participants had CD4 counts between 200–349 cells/µL³.