Trematodiasis


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trematodiasis

[‚trem·ə·tə′dī·ə·səs]
(medicine)
Infection caused by a member of the Trematoda (trematodes).

Trematodiasis

 

a helminthiasis of man and animals caused by trematodes. In man, the causative agents of trematodiases parasitize the liver, pancreas, intestines, lungs, and blood, causing various disorders. Infection usually occurs after swallowing trematode larvae with water or food. Opisthorchiasis and meta-gonimiasis are contracted by consuming infested fish, paragonimiasis by consuming infested crabs and freshwater crustaceans, and fascioliasis by consuming infested water and plants. Schisto-somiasis is contracted when the larvae of the parasites penetrate the skin during bathing.

Opisthorchiasis is found most often in Western Siberia, while paragonimiasis and metagonimiasis occur in the Far East, and schistosomiasis in tropical countries.

Treatment depends on the species of trematode. Preventive measures consist in protecting the external environment from contamination by sewage, observing rules of personal hygiene, and avoiding undercooked fish and crustaceans.

N. N. PLOTNIKOV

Trematodiases in animals are caused by approximately 125 species of trematodes that parasitize various organs and systems of all species of wild and domestic animals, including livestock and other vertebrates. Trematodes are distributed throughout the world. As a result of trematodiases, the growth of young animals is retarded and the quality of the livestock’s meat is lowered. It is necessary to destroy parasitized organs of infested animals, such as the liver and lungs, when the animals are slaughtered. In addition, plagues may break out among the animals. The greatest harm is caused by fascioliasis, dicroceliasis, and schistosomiasis japónica of sheep and cattle; echinochasmia-sis of swine; paramphistomiases of ruminants; prosthogonimiasis of chickens; and echinostomiases of poultry, caused by various species of trematodes.

Symptoms depend on the localization of the parasites in the body of the host, for example, the intestines, liver, pancreas, respiratory organs, or circulatory or genital systems. Treatment consists in the administration of antihelminthics. The main preventive measure is the control of mollusks, the intermediate hosts of trematodes, by means of the reclamation and periodic rotation of pastures.

V. I. PETROCHENKO

References in periodicals archive ?
are also highly localized, being found exclusively in compromised tissue such as at the site of trematodiasis. One explanation for this pattern is that the pink pigment attracts the fish necessary to continue the trematode life cycle (Aeby, 1992, 2002).
La sarcosporidiosis cardiaca y trematodiasis del rumen y reticulo son consistentes con los cambios observados y reportados en otros paises.
Se concluye que la Sarcosporidiosis y Trematodiasis existen como entidades nosologicas en los animales reportados de la region bajo estudio.
Respiratory trematodiasis is reported rarely in birds, although blue-crowned motmots (Momotus momota) appear overrepresented in published (1,2) and anecdotal reports (J.
As most reports of air sac trematodiasis describe management of a single individual bird (1) or cases (2-5) very little information is available on institution-wide management of this parasite.
At necropsy, severe trematodiasis with associated airsacculitis was observed in the clavicular and thoracic air sacs of all 3 birds.
Lucha contra las trematodiasis de transmision alimentaria.
Fatal hepatic trematodiasis in Sulfur Crested cockatoos.
Foodborne trematodiasis is an emerging public health problem, particularly in Southeast Asia and the Western Pacific region.
Foodborne trematodiasis, which is caused by liver flukes (Clonorchis sinensis, Fasciola spp., Opisthorchis spp.), lung flukes (Paragonimus spp.), and intestinal flukes (Echinostoma spp., Fasciolopsis buski, heterophyids), is an emerging public health problem.
The epidemiology of foodborne trematodiasis has changed in recent years.
Liver, lung, and intestinal trematodiasis. In: Warren KS, Mahmoud AAF, editors.