ABSTRACT Opportunistic intestinal protozoa are protozoa that infect humans when the body's defense system decreases (immunocompromise). Opportunistic intestinal protozoan infections were found in immunocompromised patients and have been reported to infect children. Cryptosporidium sp, Cyclospora sp, Cystoisospora belli, and Blastocystis hominis have been identified to cause infection. This res…