[Last Modified: ]
[Pentatrichomonas hominis]

Only trophozoites of Pentatrichomonas hominis are shed in feces , as there is no known cyst stage for this species.  Infection occurs after the ingestion of trophozoites in fecal-contaminated food or water, or on fomites .  Pentatrichomonas resides in the large intestine, where it is regarded as a commensal and is not known to cause disease.