Infections by Intestinal Coccidia and Giardia duodenalis

Vitaliano A. Cama, Blaine A. Mathison

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


The coccidians Cryptosporidium spp, Cyclospora cayetanensis, and Cystoisospora belli and the flagellate Giardia duodenalis are pathogenic protozoa associated with gastrointestinal manifestations. Diagnosis relies heavily on microscopy, and although ova-and-parasite examinations can detect Giardia and Cystoisospora, Cryptosporidium and Cyclospora often require specific diagnostic requests. Approved non-microscopy methods are available for Giardia and Cryptosporidium, although negative results are frequently followed by microscopic assays. Polymerase chain reaction-based methods are not frequently used for diagnosis of Giardia and Cryptosporidium and have been used primarily for epidemiologic or outbreak investigations of Giardia and Cryptosporidium.

Original languageEnglish (US)
Pages (from-to)423-444
Number of pages22
JournalClinics in Laboratory Medicine
Issue number2
StatePublished - Jun 1 2015
Externally publishedYes


  • Cryptosporidium
  • Cyclospora cayetanensis
  • Cystoisospora belli
  • Giardia duodenalis
  • Human enteric coccidian

ASJC Scopus subject areas

  • Biochemistry, medical
  • Clinical Biochemistry


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