CLINICAL DESCRIPTION
A non-specific diarrheal illness caused by the protozoan, Cyclospora cayetanensis, commonly characterized by watery diarrhea, loss of appetite, weight loss, abdominal bloating and cramping, increased flatus, nausea, fatigue, low-grade fever, and vomiting. Diarrhea in the immunocompetent person can be prolonged (with an average of 6 weeks) but is self-limited. In the immunocompromised person the diarrhea can last for months. Relapses and asymptomatic infections can occur. The average incubation period is one week, range 1 to 11 days. Transmission appears to be primarily waterborne, however other vehicles have included raspberries, basil, and lettuce. Direct person-to-person transmission is unlikely, because Cyclospora oocysts are non infectious at the time of excretion.

CASE CLASSIFICATION

1. CONFIRMED
• Demonstration of Cyclospora oocysts in stool, duodenal/jejunal aspirates, or small bowel biopsy specimens, OR
  
• Demonstration of Cyclospora DNA (by polymerase chain reaction) in stool, duodenal/jejunal aspirates, or small bowel biopsy specimens.
  
  
2. PROBABLE
   A clinically compatible case, which is epidemiologically linked to a confirmed case by the DHSS.
   
   
3. POSSIBLE

Not used

What you should know about Cyclosporiasis?