The other intestinal protozoa: Enteric infections caused by Blastocystis hominis, Entamoeba coli, and Dientamoeba fragilis

Pediatricians frequently are confronted with clinical microbiology laboratory reports about a fecal examination that was determined to be positive with Dientamoeba fragilis, Blastocystis hominis, or Entamoeba coli. Increasingly, these organisms are becoming leading causes of parasitic infection in North America. Evidence is provided that these unique organisms may be pathogenic under some circumstances. Some guidelines for management and treatment are also discussed.