Diphyllobothriasis and sparganosis

**Definition:** Diphyllobothriasis is defined as infection with the cestode Diphyllobothrium latum or other Diphyllobothrium species, which occurs accidentally in humans who ingest water containing infected cyclops, eating raw or inadequately cooked flesh. Manifestations may include abdominal discomfort, diarrhoea, vomiting and megaloblastic anaemia. Massive infections may result in intestinal obstruction.