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Related Experiment Videos

Echinostomiasis--a snail-borne intestinal trematode zoonosis.

W P Carney1

  • 1Department of Preventive Medicine and Biometrics, Uniformed Services University of the Health Sciences, Bethesda, Maryland 20814-4799.

The Southeast Asian Journal of Tropical Medicine and Public Health
|December 1, 1991
PubMed
Summary
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Echinostomiasis, caused by intestinal parasites, is diagnosed via fecal egg examination. Preventing infection involves avoiding undercooked freshwater snails, fish, and amphibians, crucial for controlling echinostome transmission.

Area of Science:

  • Parasitology
  • Zoonotic Diseases
  • Echinostomiasis

Background:

  • Echinostome trematodes are globally distributed intestinal parasites in birds and mammals.
  • Human echinostomiasis involves approximately 16 species, typically a rare intestinal parasite with minor clinical significance unless infections are severe.
  • Diagnosis relies on identifying eggs in fecal samples, while species identification requires morphological analysis of adult worms post-treatment.

Purpose of the Study:

  • To review the life cycles, diagnosis, and prevention of echinostomiasis.
  • To highlight the role of freshwater habitats and intermediate hosts in echinostome transmission.
  • To discuss the impact of dietary habits and natural predation on human echinostome infections.

Main Methods:

  • Literature review of echinostome life cycles and epidemiology.

Related Experiment Videos

  • Analysis of diagnostic methods for echinostomiasis.
  • Evaluation of prevention strategies and factors influencing transmission.

    • Main Results:

    • Echinostome life cycles are complex, involving freshwater habitats, definitive hosts (avian/mammalian), and one or two molluscan intermediate hosts.
    • Amphibians and fish can act as paratenic or transport hosts, aiding in transmission.
    • Human infections are primarily linked to consuming raw or undercooked mollusks, fish, and amphibians.

    Conclusions:

    • Effective control of human echinostomiasis is achievable through dietary modifications, specifically avoiding raw or undercooked freshwater-related foods.
    • Introduction of predatory fish has inadvertently reduced human echinostome cases by preying on essential molluscan hosts.
    • Understanding the intricate life cycles and transmission routes is vital for public health interventions against echinostomiasis.