Microsporidiosis

Parasitic Diseases, Protozoans

Animals Involved

Widespread in vertebrates, including primates, rabbits, rodents, dogs, cats, cattle, pigs, goats, birds, fish; also in invertebrates

Known Distributions

Worldwide

Probable Means of Spreading

Fecal­oral; direct contact; ingestion of contaminated food or water; aerosols; possibly vector­transmitted

Clinical Manifestations in People

Keratitis; acute diarrhea (traveler’s diarrhea); chronic diarrhea in immunocompromised; may disseminate to systemic disease with variable symptoms in immunocompromised

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