title: Infections by Intestinal Coccidia and Giardia duodenalis.
abstract: 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.
authors.affiliation: Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, MS D-65, Atlanta, GA 30341, USA. Electronic address: VCama@cdc.gov.
authors.forename: Vitaliano A
authors.initials: VA
authors.lastname: Cama
authors.affiliation: Division of Parasitic Diseases and Malaria, Centers for Disease Control and Prevention, MS D-64, Atlanta, GA 30341, USA.
authors.forename: Blaine A
authors.initials: BA
authors.lastname: Mathison
mesh_terms: D000953:Antigens, Protozoan / Q000032:analysis; D003044:Coccidia / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification / Q000502:physiology; D003048:Coccidiosis / Q000175:diagnosis* / Q000188:drug therapy / Q000453:epidemiology; D003937:Diagnosis, Differential; D016829:Giardia lamblia / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification / Q000502:physiology; D005873:Giardiasis / Q000175:diagnosis* / Q000188:drug therapy / Q000453:epidemiology; D006801:Humans; D007118:Immunoassay; D012680:Sensitivity and Specificity; D013048:Specimen Handling
chemical_list: D000953:Antigens, Protozoan
keywords: Cryptosporidium; Cyclospora cayetanensis; Cystoisospora belli; Giardia duodenalis; Human enteric coccidian