Pentatrichomonas hominis, a nonpathogenic flagellate.
Pentatrichomonas hominis is considered nonpathogenic. The presence of trophozoites in stool specimens can however be an indicator of fecal contamination of a food or water source, and thus does not rule-out other parasitic infections.
Pentatrichomonas hominis trophozoites.
Pentatrichomonas hominis is identified through the detection of trophozoites in stool specimens. Identification is best accomplished by direct wet mounts that reveal the characteristic, jerky movement of the organisms. They may also be identified in permanent stained smears, although their affinities for stain are inconsistent and with their small size are often overlooked.
DPDx is an education resource designed for health professionals and laboratory scientists. For an overview including prevention and control visit www.cdc.gov/parasites/.