Echinostomiasis B66.8

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 29.10.2020

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Synonym(s)

Garrison's fluke infection

Definition
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Trematode infection by intestinal flukes of the genus Echinostoma.

Pathogen
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  • Trematodes: intestinal flukes of the genus Echinostoma. Over 10 different species are responsible for human infections.
  • The most common species are Echinostoma ilocanum (synonym: Echinostoma lindoense), E. malayanum, E. revolutum and Hypoderaeum conoideum.
  • First intermediate hosts are water snails, second intermediate hosts are freshwater fish and snails.
  • Adults are 5-15 mm long.
  • Infection by consumption of raw or undercooked snails or fish.

Occurrence/Epidemiology
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Distribution in Indonesia, Philippines, Thailand, Taiwan.

Clinical features
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Uncharacteristic abdominal pain, meteorism, mild diarrhea, anemia, edema. In severe forms of the disease, pronounced signs of anaemia, especially cyanotic tongue base vessels and lip pallor. Occasional perianal itching.

Diagnosis
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  • Stool microscopy: 80-150 x 50-90 µm oval eggs.
  • Species differentiation of the eggs and differentiation between Fasciolopsis buski and Fasciola species is difficult.

Therapy
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  • Praziquantel: Single dose of 25 mg/kg bw p.o.
  • Alternatively albendazole: 2 times/day 400 mg p.o. for 3 days.
  • Alternatively: Niclosamide 150 mg/kg bw to a maximum of 6 g p.o. for 2 consecutive days.
  • Alternatively: Tetrachloroethylene 0,1 mg/kg bw p.o. as single dose.

Prophylaxis
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Avoid raw snails and fish.

Literature
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  1. Carney WP (1991) Echinostomiasis--a snail-borne intestinal trematode zoonosis. Southeast Asian J Trop Med Public Health 22 (Suppl): 206
  2. Maclean JD et al (2006) Liver, lung, and intestinal fluke infections. In: Guerrant, RL, Walker, DH, Weller, PF (Eds) Tropical Infectious Diseases: Principles, Pathogens and Practice, 2nd ed. Churchill Livingstone, Philadelphia, Chap 117. p. 1349

Incoming links (1)

Fasciolopsiasis;

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Please ask your physician for a reliable diagnosis. This website is only meant as a reference.

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Last updated on: 29.10.2020