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Cryptosporidiosis (Cryptosporidium)
2009 Case Definition
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 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.
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