ABSTRACT
Tiny coccidian acquired by ingestion of an oocyst (infectious when passed). PPP= 5 to 7 days. Dx: Oocysts (5 µm in diameter) in feces easiest to see in sugar flotation. Habitat: Small intestinal mucosa. Similar Species: None. Range: World. Clinical Signs: Usually asymptomatic. Cats with some other immunosuppressive disorder can develop severe diarrhea. Potential Zoonosis: Unclear how many humans infected with feline species, but must treat oocysts in cat feces as potentially infectious to humans. Tx: No approved drug. Paromomycin effective but use with care in young and cats with severe diarrhea. Tylosin reported effective in one cat.
