National case definition: Cryptosporidiosis
Date of last revision/review: May 2008
Only confirmed cases of disease should be notified.
Type of surveillance
Routine case-by-case notification to the federal level
Laboratory confirmation of infection with or without symptoms from an appropriate clinical specimen (e.g. stool, intestinal fluid or small bowel biopsy):
- demonstration of Cryptosporidium oocysts
- detection of Cryptosporidium DNA
- demonstration of Cryptosporidium antigen by an approved method (e.g. EIA, immunochromatographic - ICT)
Clinical illness in a person who is epidemiologically linked to a confirmed case
While Cryptosporidium parvum and Cryptosporidium hominis are the leading causes of cryptosporidiosis, other species are known to cause diarrheal illness in immunocompromised individuals.
Clinical illness is characterized by diarrhea (often profuse and watery), abdominal cramps, anorexia, fever, nausea, general malaise and vomiting.
Probable case definitions are provided as guidelines to assist with case finding and public health management, and are not for national notification purposes.
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