Snail fever
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The document outlines the 12-week life cycle of the parasite that causes schistosomiasis. It begins when parasite eggs released in human waste enter water and hatch. The larvae infect certain freshwater snails where they multiply and develop. Next, the larvae exit the snails and penetrate human skin during water contact. Finally, the larvae mature into adult worms in the human intestines or bladder where the females produce eggs, completing the cycle.
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Trematode留礆留亳 仄留旅从
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The document discusses several species of trematodes (parasitic flatworms) that infect humans, including their life cycles, transmission, sites of infection, and associated diseases. It focuses on the important trematodes Schistosoma species (which cause schistosomiasis), Clonorchis sinensis (liver fluke), Paragonimus westermani (lung fluke), Fasciola hepatica, and Fasciolopsis buski. It provides details on the life cycles, pathogenesis, clinical findings, and diagnosis of schistosomiasis. It also briefly discusses Fasciola hepatica (sheep liver fluke) and Fasciolopsis buski, which infect the bileTrematode
TrematodeAman Ullah
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The document discusses several species of trematodes (parasitic flatworms) that infect humans, including their life cycles, transmission, pathogenesis, clinical findings, and diagnosis. It covers the important trematodes Schistosoma (blood flukes), Clonorchis sinensis (liver fluke), Paragonimus westermani (lung fluke), Fasciola hepatica, and Fasciolopsis buski. It provides details on the life cycles, symptoms, and laboratory diagnosis of Schistosoma and Fasciola infections.5.1.3.2._BLOOD_FLUKES_(AHMED).ppt
5.1.3.2._BLOOD_FLUKES_(AHMED).pptKnqAutlawzvFb
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The document discusses blood flukes (schistosomes), which are parasitic worms that reside in blood vessels. It outlines five species of medical importance: S. mansoni, S. hematobium, S. japonicum, S. intercalatum, and S. mekongi. Each species has a distinct geographical distribution, life cycle involving an intermediate snail host, and causes a specific type of schistosomiasis. Laboratory diagnosis methods include finding eggs in stool or urine samples via concentration techniques or serological detection of antigens/antibodies. Chronic schistosomiasis can lead to serious complications depending on the infecting species, such as portal hypertension from S. mansoni infection.Schistosomiasis_Explaination in parasitology
Schistosomiasis_Explaination in parasitology21014114028
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Schistosomiasis, caused by schistosome flatworms, affects the urinary and intestinal systems, with significant global infection rates, particularly for S. haematobium. The disease has various stages, leading to symptoms such as hematuria and granulomatous reactions around eggs, which can result in complications like cancer and portal hypertension. Treatment often involves praziquantel, with a focus on preventive measures to decrease transmission and environmental contamination.Class Trematoda_073315, the Flukes- lung, liver, intestinal
Class Trematoda_073315, the Flukes- lung, liver, intestinalMarionEndialle
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Trematoda are parasitic flukes characterized by their attachment to hosts using suckers and a complex life cycle that includes both asexual and sexual generations across multiple hosts. Key species such as Schistosoma mansoni and Fasciola hepatica exhibit significant geographical distribution and pathology, affecting humans and animals through their respective habitats and modes of transmission. Diagnosis typically involves egg identification in feces and implementation of prevention strategies like safe water practices and sanitation to control infection rates.Life cycle of fasciola hepatica:Trematods
Life cycle of fasciola hepatica:TrematodsNarendra Manwar
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The life cycle of Fasciola hepatica involves two hosts. In the primary host of sheep or cattle, the adult fluke lives in the bile duct where copulation and egg production occurs. The eggs pass out in feces into water. In the secondary host of a snail, the egg hatches into a miracidium larva which penetrates the snail and develops through sporocyst and redia larval stages to produce cercariae. The cercariae exit the snail and shed their tails to form encysted metacercariae. Sheep ingest the metacercariae which excyst in their intestine and migrate to the bile ducts to mature into adult flukesinbound332918890855275519huvghhhu2i2.pptx
inbound332918890855275519huvghhhu2i2.pptxgleannicoleedu
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Nematodjsjqjwjsaw jsjwjwjwjwajjw hshwhwhwham jajqjqjqjjq iiajqjqjqjiq jajwjqkak iskiwqkqj2 jsjkwwkj jwjqiqk jajjqjqjq kkjwjqj jajwjhqhh jajwjwhhw sjjwhhe wjjwhweheh jsjshshha jakkwiqqi kakajjwwj kajajwjhe jshshehhe ksksjwjww iskajhwhwququ jajjwjqjj jajwjwjqjn jjjsjwjw jjqjqj iqkjqqjqj jwjqkjqi hahahwh jjsjwhwhSchistosoma haematobium
Schistosoma haematobiumPOOJA KUMAR
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This document discusses Schistosoma haematobium, a species of blood fluke that causes urinary schistosomiasis. It covers the organism's morphology, life cycle, clinical presentation, diagnosis, and treatment. Key points include:
- S. haematobium has a leaf-like body with two suckers and an inverted Y-shaped alimentary canal. It lives in venous plexuses and releases eggs that pass in urine.
- Its life cycle involves freshwater snails as an intermediate host and humans as the definitive host. Larval cercariae penetrate the skin and develop into adult worms.
- Clinical manifestations range from transient rashes to hematuria,Trematodes MW.ppt
Trematodes MW.pptObsa2
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Trematodes, also known as flukes, are flatworm parasites that attach to their host using suckers. They have a digestive system consisting of a mouth and esophagus leading to intestinal caeca but no anus. Major groups of flukes include blood flukes, liver flukes, lung flukes, and intestinal flukes. The life cycle involves sexually mature adults in the definitive host shedding eggs, which are excreted and hatch in water, infecting an intermediate snail host and developing into cercariae that infect the definitive host directly or via an intermediate host. A notable example is Schistosoma, the blood flukes, which reside in blood vessels and cause schistosomiasTrematodes
TrematodesJessabeth Aluba
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The document discusses significant human trematodes, primarily focusing on schistosomiasis caused by various Schistosoma species, which affect millions globally and lead to serious health issues. It outlines their life cycle, symptoms, diagnosis, and treatment options, particularly highlighting praziquantel as an effective medication. Additionally, the document covers other trematodes, such as Fasciolopsis buski and Paragonimus westermani, detailing their epidemiology, life cycles, and clinical manifestations.18. phylum platyhelminthes II Full Explanation
18. phylum platyhelminthes II Full Explanation Yo yo Nody khan
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The document summarizes key aspects of three phyla of parasitic flatworms - Monogenea, Trematoda, and Cestoidea. It describes their life cycles, important anatomical features, examples of parasites of humans, and how they infect and reside within host organisms. Some key points are that Monogenea have a direct life cycle, Trematoda have indirect life cycles requiring multiple hosts, and Cestoidea (tapeworms) absorb nutrients directly through their skin and consist of repeating reproductive segments.Ad
Snail fever
- 1. The larvae migrate through the blood stream and lodge between the intestines and liver, or the vesical veins in the bladder. Feeding on red blood cells, they develop into adult worms and mate. The eggs produced by the worms escape through the intestines (in feces) or the bladder (in urine) Hatched eggs penetrate the foot of a freshwater snail. Worm eggs released into the water By human feces/urine entering a water source. Eggs hatch when contact with water is made. The 12-week Life Cycle of Schistosomiasis Free- swimming larvae (Sporocysts-stage 1) Eggs (miracidia) Free- swimming larvae (cercariae stage 2) Adult worms Images courtesy of Public Health Image Library http://phil.cdc.gov/phil/home.asphttp://www.scienceinschool.org/print/787 Asexual reproduction from within the snail produce cercariae. Transmission to humans (& other mammals) occurs by entering waters containing infected snails.