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Giant Intestinal Fluke

Fasciolopsiasis

 

Disease caused by Fasciolopsis buski

(INTESTINAL FLUKE)

 

Figure #1: Fasciolopsis buski (egg form): ellipsoidal, yellow-brown, with a thin transparent shell, and a usually small, indistinct operculum at the more pointed end (here it is open).  Eggs range in size: 130 to 159 µm by 78 to 98 µm. (1, 30)

Figure #2: Fasciolopsis buski (adult form)--The largest intestinal trematode of humans, measuring 2 –7.5cm by 8–20mm by 1–3mm. It has an oral and ventral sucker, two large ceca, two branched testes and a central and coiled uterus. (1, 3, 30)

 

Classification of the Agent: (2, 21, 22)

Parasite

Phylum:Platyhelminthes (Flat worms)

Class: trematoda (the Flukes)

Order: Echinostomatida (Cercaria with simple tails, which encyst as metacercaria on vegetation )

Family: Fasciolidae (Large, flattened, leaf-like parasites of mammals)

Genus Species: Fasciolopsis buski (Giant Intestinal Fluke)