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Cryptosporidiosis (Cryptosporidium spp.)
2009 Case Definition

CSTE Position Statement(s)

  • 09-ID-32

Clinical Description

An illness characterized by watery diarrhea, abdominal cramps, loss of appetite, low-grade fever, nausea and vomiting. The disease can be prolonged and life-threatening in severely immunocompromised persons.

Laboratory Criteria for Diagnosis

Laboratory-confirmed cryptosporidiosis shall be defined as the detection of a member of the genus Cryptosporidium by one of the following methods:

  • Organisms in stool, intestinal fluid, or tissue samples or biopsy specimens
  • Antigens in stool or intestinal fluid, OR
  • Nucleic acid by polymerase chain reaction (PCR) in stool, intestinal fluid, or tissue samples or biopsy specimens

Case Classification

Probable

A case that meets the clinical description and that is epidemiologically linked to a confirmed case.

Confirmed

A case that meets the clinical description and at least one of the criteria for laboratory-confirmation as described above. When available, species designation and molecular characterization should be reported.

Comments

The 2009 case definition appearing on this page was re-published in the 2009 CSTE position statement 09-ID-32. Thus, the 2009 and 2010 versions of the case definition are identical.



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