title: A new coccidian parasite (Apicomplexa: Eimeriidae) from humans.
abstract: A new coccidian parasite has been found in stool specimens of humans with and without diarrhea. The oocyst of this parasite measures 8.6 microns in diameter (7.7-9.9 microns), with ovoid sporocysts 4.0 x 6.3 (3.3-4.4 x 5.5-7.1) microns. Each oocyst has 2 sporocysts and each sporocyst contains 2 sporozoites. Based on these characteristics and the structures observed by electron microscopy, this parasite has been classified in the genus Cyclospora. We propose the name Cyclospora cayetanensis n. sp. for this new human parasite.
authors.affiliation: Department of Veterinary Science, University of Arizona, Tucson 85721.
authors.forename: Y R
authors.initials: YR
authors.lastname: Ortega
authors.forename: R H
authors.initials: RH
authors.lastname: Gilman
authors.forename: C R
authors.initials: CR
authors.lastname: Sterling
mesh_terms: D000818:Animals; D002648:Child; D003048:Coccidiosis / Q000469:parasitology*; D015331:Cohort Studies; D003967:Diarrhea / Q000469:parasitology*; D016783:Eucoccidiida / Q000145:classification* / Q000648:ultrastructure; D005243:Feces / Q000469:parasitology; D006801:Humans; D007411:Intestinal Diseases, Parasitic / Q000469:parasitology*; D008854:Microscopy, Electron; D011446:Prospective Studies