Cystoisosporiasis

**Definition:** A disease caused by the protozoan parasite Cystoisospora belli. This disease is characterised by watery diarrhoea, fever, abdominal pain, nausea, or malaise. Transmission is by the faecal-oral route, commonly through the ingestion of contaminated food or water. Confirmation is by identification of Cystoisospora belli in a faecal sample.