A gastrointestinal illness characterized by diarrhea, abdominal cramping, fever, nausea, vomiting and/or anorexia.
Probable: The detection of Cryptosporidium antigen by immunodiagnostic methods.* Confirmed: The detection of Cryptosporidium organisms or DNA in stool, intestinal fluid, tissue samples, biopsy specimens, or other biological sample.** * Test results known to be obtained with commercially-available immunochromatographic card tests are limited to meeting "probable" case criteria due to a recent report of unacceptably high rates of false-positive results.1 ** The confirmed laboratory criteria include detection of Cryptosporidium by established laboratory methods (e.g., direct fluorescent antibody [DFA] test or polymerase chain reaction [PCR]).
A case that meets the clinical description and has probable criteria for laboratory diagnosis or that is epidemiologically linked to a confirmed case.
A case that meets the clinical description and the respective criteria for laboratory-confirmation as described above.