Taxonomy: Class Blastocystea
Animal: Blastocystis hominis (epidemiology) 6 04.jpg
Blastocystis hominis - The Enigma. It is accepted that Blastocystis hominis may act as a commensal but become pathogenic under certain conditions related to the host factors such as immunosuppression, poor nutrition or other concomitant infections/conditions. Indeed, symptoms may resolve in some patients in whom Blastocystis is still present, perhaps related to: parasite load, presence of a toxin, strain or life cycle stage present, host factors or an underlying infection or condition for which B.hominis is a marker.

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