Fasciolopsiasis

Riesendarmegel egg ( F. buski )

The Riesendarmegel ( F. buski ) belongs to the group of trematodes.

Occurrence

F. buski is located in the following countries: Central and Southern China, Taiwan, Vietnam, Thailand, India, Borneo and in other countries of Southeast Asia. Million people are infected in these countries, especially in rural areas.

Features

This Riesendarmegel can be up to 80 mm in size. He's a dangerous parasite of animals and humans and is considered causative agent of Fasciolopsiasis. The pig is considered in some parts of the world as a natural reservoir for this parasite. Even dogs and rabbits can be infected by it.

Intermediate hosts

As intermediate hosts for the Riesendarmegel occur snails on, particularly the species Segmentina nitidella, Segmentina hemisphaerula and Hippeutis schmackerie as well as the genera Gyraulus, Lymnaea, Planorbis and Indoplanorbis. The genus Pila (apple snails) is called from a source.

Infection in humans

The man takes the intestinal fluke orally mostly as metacercariae, which are located in stagnant water intended for human consumption to water plants or marsh plants. These include especially the water chestnut, the water chestnut, and probably the lotus root, water spinach and the Manchurian wild rice ( Zizania latifolia ), whose stems are also affected by fungi eaten raw as a vegetable (see Engl. Source 1 ).

Diagnosis

Evidence of worm eggs in the feces.

Disease / symptoms

After an incubation period of up to three months, it comes at a Fasziolopsiasis abdominal pain, constipation and diarrhea, allergic reactions and nausea. Occasionally, the disease leads to death.

Therapy

Treatment is possible with praziquantel.

Prevention

• Heating water plants before consumption
• Heating of drinking water from surface waters (" encysted cercariae exist not only on aquatic plants, but that is on the surface of the water. " )
• Control of wastewater of human and animal
• Control of intermediate hosts ( snails)