Cyclosporiasis

2010 Case Definition

CSTE Position Statement Number: 09-ID-04

Clinical Description

An illness of variable severity caused by the protozoan parasite Cyclospora cayetanensis. The most common symptom is watery diarrhea. Other common symptoms include loss of appetite, weight loss, abdominal cramps/bloating, nausea, body aches, and fatigue. Vomiting and lowgrade fever also may be noted.

Laboratory Criteria

Confirmed:

Laboratory-confirmed cyclosporiasis shall be defined as the detection of Cyclospora organisms or DNA in stool, intestinal fluid/aspirate, or intestinal 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.

Probable:

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

* For this condition Confirmed and Probable cases are included in the released case counts.

Case Classification Table

Criterion for Defining Cases of Cyclosporiasis Confirmed Probable
Clinical Evidence:
Diarrhea O O
Nausea O O
Abdominal Cramps O O
Anorexia O O
Abdominal Bloating O O
Vomiting O O
Weight Loss O O
Low Grade Fever O O
Myalgia O O
Fatigue O O
Laboratory Evidence:
Detection of Cyclospora organisms or DNA in stool O
Detection of Cyclospora organisms or DNA in intestinal fluid/aspirate, or intestinal biopsy specimens O
Epidemiologic Evidence:
Epi-linked to a Confirmed case of cyclosporiasis O
Member of a risk group as defined by Public Health during an outbreak O

Notes:

O = At least one of these “O” (Optional) criteria in each category (e.g., clinical evidence and laboratory evidence) in the same column is required to classify a case.

Date Posted: