Immature fasciola eggs are discharged in the biliary ducts and in the stool 1. Association of fasciola hepatica infection with liver. The disease caused by the fluke is called fascioliasis. Fasciola hepatica fasciola hepatica, also known as the common liver fluke or sheep liver fluke, is a parasitic flatworm of the class trematoda, phylum platyhelminthes that infects the livers of various mammals, including humans. Theyll give your presentations a professional, memorable appearance the kind of sophisticated look that. It causes damage to the liver tissues producing liver rot in all sheep breeding areas of the world. Fasciola hepatica pdf animal diseases epidemiology. Fasciola hepatica, also known as the common liver fluke or sheep liver fluke. Emerging foodborne trematodiasis keiser j, utzinger j. Fascioliasis is found in all continents except antarctica, in over 70 countries, especially where there are sheep or cattle. The validated and accurate fas2elisa test a currently used routine serological test for fasciola infection in peru was used to examine the existence of the circulating f.
The disease is a plantborne trematode zoonosis, and is classified as a neglected tropical disease ntd. Foodborne trematodiases are an emerging public health problem in southeast asia and latin america, and are caused by the following flukes. Test evaluation has mainly been carried out using gold standard approaches or under experimental settings, the limitations of which are well known. The disease is a wellknown veterinary problem of worldwide distribution. Negative serology of fasciola hepatica infection in. Fasciola hepatica is associated with the failure to detect.
Fascioliasis is a major parasitic disease caused by the digenetic trematodes fasciola hepatica and fasciola gigantica. In this study, we found some evidence of an association between fasciola infection with liver fibrosis and cirrhosis, but little between fasciola and cancer. Zoonotic trematode infections are an area of the neglected tropical diseases that have become of major interest to global and public health due to their associated morbidity. Fascioliasis is a parasitic disease caused by fasciola hepatica f. In this article we will discuss about fasciola hepatica. Serological techniques increase sensitivity at all stages of the liver fluke infection. Multiple choice questions on phylum platyhelminthes. Fasciola, lymnaeids and human fascioliasis, with a global overview on disease transmission, epidemiology, evolutionary genetics, molecular epidemiology and control. Fasciola hepatica is a liver parasite of mammals and it results in poor welfare outcomes and economic losses in ruminants. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from.
The assay has been validated using naturally infected populations and is the first test enabling the identification of herds and individuals that. The fascioliasis is a parasitic infection caused by tremadotes of fasciola genre and the more frequent species is fasciola hepatica which is distributed in all continents and to infecting many mammals, including the man. The aim of this observational study was to assess the prevalence of exposure to f. The liver fluke fasciola hepatica is a trematode parasite with a worldwide distribution and is the cause of important production losses in the dairy industry. Fasciola hepatica infection is widespread across eastern new south wales where the annual mean rainfall is about. The search term was adapted to the predominate language of the database. Fascioliasis due to fasciola hepatica and fasciola gigantica infection. The life cycle of fasciola hepatica starts when a female lays eggs in the liver of an infected human. Multiple choice questions on phylum platyhelminthes mcq.
A free powerpoint ppt presentation displayed as a flash slide show on id. Fasciola hepatica, also known as the common liver fluke or sheep liver fluke, is a parasitic trematode fluke or flatworm, a type of helminth of the class trematoda, phylum platyhelminthes. Their greatest importance lies in the economic impact. While faecal egg count is the test most commonly used for diagnosis, it does not indicate presence of migrating immature stages. The trematodes fasciola hepatica also known as the common liver fluke or the sheep liver fluke and fasciola gigantica are large liver flukes f. It is a parasitic trematode fluke or flatworm in the phylum platyhelminthes it infects the livers of various mammals, including humans.
The life cycle, transmission, morphology, clinical presentation, and treatment of the f. Distribution is worldwide and is dependent upon lymnaeid snails as. Fasciola hepatica is the major species in temperate regions, while f. Pdf histopathology of fasciola hepatica infection in. In total, 31 adult flukes isolated from cattle from various regions in austria were investigated for their cytochrome oxidase. Ppt fasciola hepatica powerpoint presentation free to. Clonorchis sinensis, fasciola gigantica, fasciola hepatica, opisthorchis felineus, opisthorchis viverrini, and paragonimus spp. It has been classified as a neglected tropical disease. Diagnosis of fasciola hepatica in livestock chasing the fluke or its impact. To complete its life cycle, this trematode needs an intermediate host, represented by a mollusk from lymnaeidae family. The disease caused by the fluke is called fasciolosis or fascioliasis, which is a type of helminthiasis and has been classified as a neglected.
First report of prehispanic fasciola hepatica from south. The aim of this study was to determine the genetic diversity of f. Additional notes on the growth of fasciola hepatica l. Fasciolosis is a parasitic worm infection caused by the common liver fluke fasciola hepatica as well as by fasciola gigantica. The worldwide occurring common liver fluke fasciola hepatica can infect humans and animals and leads to considerable illness and economic loss annually. Fasciola hepatica is a parasite of herbivorous mammals and humans. The intermediate host in the life cycle of taenia saginata is. Fasciola hepatica simple english wikipedia, the free. Human fascioliasis is a trematode zoonosis of interest in public health. The fasciola hepatica is a parasite from the class trematoda of the order digenea, which maintains a wide distribution worldwide. Fasciola hepatica is a trematode parasite in the same family as schistosomes and shares crossreactive antigens with schistosomes. Fasciola hepatica the liver fluke fasciola hepatica is a common fluke found in the liver and bile ducts of cattle, sheep, goat, pig, rabbit, dog etc. It affects humans, but its main host is ruminants such as cattle and sheep.
Eggs become embryonated in water 2, eggs release miracidia 3, which invade a suitable snail intermediate host 4, including the genera galba, fossaria and pseudosuccinea. In the absence of commercially available vaccines to control fasciolosis, increasing reports of resistance to current. Globally, it has been estimated that approximately 56 million people are infected by these parasites. Fasciola hepatica definition of fasciola hepatica by. Fasciola hepatica is a parasite introduced in america from europe, being considered of concern for public health and animal production, especially. Dengan memahami siklus hidup cacing hati, diharapkan akan mampu memberikan pemahaman yang holistik akan preferensi upaya preventif yang akan diambil sebagai penanggulangan. The liver fluke fasciola hepatica is a cosmopolitan parasitic flatworm causing zoonotic disease in humans and tremendous economic losses by infecting livestock 1. Fascioliasis is a parasitic infection typically caused by fasciola hepatica, which is also known as the common liver fluke or the sheep liver fluke. In this study, a bayesian no gold standard approach was used to estimate the.
Fasciola hepatica an overview sciencedirect topics. Economically important infections are seen in cattle, sheep, alpacas, and llamas in three forms. Fasciola hepatica has enormous biotic potential, involving sexual, hermaphroditic, or parthenogenic reproduction in the final mammalian host and clonal asexual multiplication in intermediate molluscan hosts. Evaluation of the performance of five diagnostic tests for. Helminth parasites typically have large genomes with high levels of genetic polymorphism, and the existence of triploidy in some populations of f hepatica confers. The genus name is derived from the latin word fasciola, meaning fascia or band. Epidemiology and impact of fasciola hepatica exposure in. It infects the livers of various mammals, including humans.
It is known as the common liver fluke and causes a disease called fascioliasis. Heather sedlacek, in the laboratory rabbit, guinea pig, hamster, and other rodents, 2012. A related parasite, fasciola gigantica, also can infect people. Siklus hidup fasciola hepatica cacing hati javaurora. Conjugated lectins used for screening histological sections of adult fasciola hepatica andor western blots of adult f. It affects approximately 50 million people worldwide and over 180 million are at risk of infection in both developed and underdeveloped. Fasciola hepatica sheep liver fluke phylum platyhelminthe class trematoda fasciola gigantica very rarely infects humans. Diagnosis of triclabendazole resistance in fasciola hepatica. Fasciola hepatica is an endoparasite that lives in the. The clinical and economic importance of fasciolosis has been recognised for centuries, yet diagnostic tests available for cattle are far from perfect. Winner of the standing ovation award for best powerpoint templates from presentations magazine. The grass contaminated with feces is the main source of transmission, with snails acting as an essential part of the biological cycle.
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