Natural regulatory T cells increase significantly in pediatric patients with parasitic infections: Flow cytometry study.

The levels of natural regulatory T cells, indicated by the biomarkers, CD4, CD25, and Foxp3, increase significantly in patients infected by Entamoeba histolytica, Schistosoma mansoni, Giardia lamblia, Enterobius vermicularis, and Hymenolepis nana as compared to controls. They also increase in cases of mixed infection as compared to infection by a single parasite.