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Blastocystis hominis infection 

Blastocystis hominis infection
Blastocystis hominis infection

Richard Knight



Pathology—possible pathological and clinical evidence of tissue invasion.

Epidemiology—pigs, cattle, nonhuman primates, and birds (including chickens and ducks) are important zoonotic sources.

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date: 19 September 2021

Blastocystis hominis is an anaerobic unicellular non-invasive colonic parasite of animals and humans. It is transmitted faeco-orally, with human infection associated with travel, institutions, animal handlers and immunodeficiency. Case reports strongly suggest that it causes a self-limited diarrhoeal illness. Diagnosis is by microscopic examination of faecal smears or concentrates. A trial of treatment with metronidazole is justified in patients who are immunocompromised, also when symptoms are prolonged....

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