Cryptosporidiosis (Cryptosporidium)

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2009 Case Definition

Clinical description

CSTE Position Statement Number: 09-ID-32

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:

1. Organisms in stool, intestinal fluid, or tissue samples or biopsy specimens
2. Antigens in stool or intestinal fluid, or
3. Nucleic acid by PCR in stool, intestinal fluid, or tissue samples or biopsy specimens

Case classification

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.

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

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.

See also:

• 1998 Case Definition
• 1995 Case Definition

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This page last updated January 12, 2010

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