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Scientific classification

Schneider, 1881

I. almaataensis
I. anseris
I. ashmoonensis
I. bahiensis
I. belli
I. bigemina
I. bronchocelae
I. buteonis
I. buteonis
I. canis
I. cardellinae
I. felis
I. hammondi
I. heydorni
I. hominis
I. mandari
I. mejiro
I. neorivolta
I. ohioensis
I. peromysci
I. rara
I. ratti
I. rivolta
I. suis
I. thibetana
I. wallacei

Isospora is a genus of internal parasites in the subclass Coccidia.[1][2]

It is responsible for the condition isosporiasis, which causes acute, non-bloody diarrhoea in immunocompromised individuals.


At least 248 species have been described in this genus. For instance, the house sparrow has 12 species of Isospora.[1][2] However, most species are little studied, and some authors doubted whether all should be recognized as distinct species;[3] some have proposed splitting those species with paratenic hosts into separate genera Levinia or Cystoisospora, but as of 1997 this had not been widely accepted.[3]


  1. ^ a b Grulet, O.; Landau, I.; Millet, P.; Baccam, D. (1986). "Les Isospora du Moineau. I — Compléments à l'étude systématique" (PDF). Annales de Parasitologie Humaine et Comparée. 61 (2): 155–160. doi:10.1051/parasite/1986612155. ISSN 0003-4150. open access
  2. ^ a b Grulet, O.; Landau, I.; Millet, P.; Baccam, D. (1986). "Les Isospora du Moineau. II — Études sur la biologie". Annales de Parasitologie Humaine et Comparée. 61 (2): 161–192. doi:10.1051/parasite/1986612161. ISSN 0003-4150. open access
  3. ^ a b David S. Lindsay; J. P. Dubey; Byron L. Blagburn (January 1997), "Biology of Isospora spp. from Humans, Nonhuman Primates, and Domestic Animals", Clinical Microbiology Reviews, 10 (1): 19–34, doi:10.1128/CMR.10.1.19, PMC 172913, PMID 8993857

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