The most common of the 15 reported Echinostoma species in humans are E. ilocanum in the Philippines and Thailand, and both E. malayanum and E. revolutum. The trematode species Echinostoma ilocanum reaches a size of 7 x mm and parasitizes in the small intestine of humans and of many mam- mals (e.g., dogs). PDF | On Jul 1, , M Grover and others published Echinostoma Ilocanum Infection.

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Different echinostome species have different life cycle and different source of infections. Metacercariae excyst in the duodenum and adults reside in the small intestine.

Published online Jun Recommend on Facebook Tweet Share Ilocanmu. Recovery of adult flukes after anthelmintic treatment can help identify the echinostome fluke involved.

From Wikipedia, the free encyclopedia. Find articles by Muth Sinuon. Articles with ‘species’ microformats. Echinostoma ilocanumworm recovery, trematode, echinostome, Cambodia. Methods for classifying Echinostoma species, such as the Echinostoma revolutum group, were devised by Kanev.

By using this site, you agree to the Terms of Use and Privacy Policy. The miracidium takes on average 10 days to mature before hatching and penetrating the first intermediate host, a snail. Adult Echinostoma have two ulocanum Find articles by Hoo-Gn Jeong. Find articles by Tai-Soon Yong.

In the first intermediate host, the miracidium undergoes asexual reproduction [15] for several weeks, which includes sporocyst formation, a few generations of rediae and the production of cercariae.


Epidemiology and morbidity od food-borne intestinal trematode infections. Higher magnification of the specimen in Figures A-C. Molecular methods, such as sequencing mitochondrial DNA and ribosomal DNAare also used to distinguish between species of Echinostoma as an alternative to morphological classification methods. Multi-infection with helminthes in adults from northeast Thailand as determined by post-treatment fecal examination of adult worms.

This bivalve genus has been recorded as a second intermediate host for E. Find articles by Duong Socheat. Methods such as the Kato-Katz procedure can be used to do this. Other helminth eggs detected included echinostome eggs 1. Worldwide, but human cases are seen most-frequently in southeast Asia and in areas where undercooked or raw freshwater snails, clams and fish are eaten. The parasites wchinostoma spread when humans or animals eat infected raw or undercooked food, such as bivalve molluscs or fish [2].

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Note the thin and inconspicuous operculum arrow; up and a tiny abopercular knob at its terminal end arrow; down. Shown here are eggs EG within the size range for Echinostoma spp.

Notice the acetabulum ventral sucker, AC. Canadian Journal of Zoology. The oral sucker is surrounded by a collar of spines, iloanum number of which varies among species.

Prevalence of intestinal helminths among students and general inhabitants in 7 small villages of Oddar Meanchey Province, Cambodia as determined by the Kato-Katz fecal examination in May and November Eggs are passed unembryonated in feces. For an overview including prevention and control visit www.


Echinostoma are not highly pathogenic.

Echinostoma – Wikipedia

The main source of human infection is large freshwater snails, Pila luzonica in the Philippines and Viviparus javanicus in Indonesiaand rats and dogs are animal reservoir hosts [ 1 ]. Echinostome egg positive cases, 13 in total number, consisted of 8 males and 5 females, and 6 students and 7 inhabitants. In cases with heavy worm loads of the echinostome species, Artyfechinostomum malayanummortality due to intestinal perforation or marked malnutrition and anemia has been reported [ 1 ].

Notice the vitelline glands VT and lobed testes TE.

Catarrhal inflammation often occurs due to the penetration of the sharp-spined collar into the intestinal mucosa. When the eggs are in contact with fresh water they may become embryonated, and will then hatch and release miracidia.

Examining the phylogenetic relationships of echinostome parasites in North America”.

Echinostoma ilocanum

Echinostoma are hermaphrodites[8] echinosgoma have both male and female reproductive organs. Please review our privacy policy. In order to recover the adult echinostomes, 2 males aged 16 and 36 years among the symptomatic patients were selected for anthelmintic treatment and purging.