trematodes. schistosomiasis caused by blood flukes –most common s. haematobium –africa and...
TRANSCRIPT
![Page 1: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/1.jpg)
Trematodes
![Page 2: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/2.jpg)
Schistosomiasis
• Caused by blood flukes– Most common
• S. haematobium– Africa and Middle East
• S. japonicum– Far east Asia
• S. mansoni– South America, Caribbean and Africa
![Page 3: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/3.jpg)
Schistosomiasis
![Page 4: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/4.jpg)
S. mansoni and S. japonicum
• Can be asymptomatic
• Acute disease– Skin
• Dermatitis at site of cercaria entry
– GI tract• Abdominal pain, diarrhea, ascites
– Hepatosplenomegaly• Enlarged liver and spleen
– Brain• Ectopoic eggs can cause lesions
![Page 5: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/5.jpg)
S. haematobium
• Infects urinary tract– Cystitis, ureteritis, hematuria– Bladder cancer
• Leading cause in affected areas
![Page 6: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/6.jpg)
Schistosoma Eggs
• S. mansoni S. japonicum S. haematobium
![Page 7: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/7.jpg)
Schistosoma mansoni
![Page 8: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/8.jpg)
Schistosoma mansoni
![Page 9: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/9.jpg)
Clonorchiasis
• Clonorchis sinensis– Asia including Korea, China, Taiwan and
Vietnam
• Inflammation and obstruction of biliary ducts– Chronic infections can cause cancer of the
biliary ducts
![Page 10: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/10.jpg)
Clonorchiasis
![Page 11: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/11.jpg)
Clonorchis eggs
![Page 12: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/12.jpg)
Clonorchis sinensis
![Page 13: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/13.jpg)
Clonorchis sinensis
![Page 14: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/14.jpg)
Key for Images• Key• AC=acetabulum (ventral sucker) • IN=intestine • CE=cecum • OS=oral sucker • CL=collar • OV=ovary • CS=cirrus sac • PH=pharynx • EB=excretory bladder • SR=seminal receptacle • EG=eggs (within uterus) • TE=testes • ES=esophagus • UT=uterus • GA=genitoacetabulum • VT=vitellaria
![Page 15: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/15.jpg)
Fascioliasis
• Fasciola hepatica (sheep liver fluke)– Worldwide
• Fasciola gigantica– Asia, Africa, Hawaii
• Inflammation and obstruction of biliary ducts– Abdominal pain, fever vomiting and diarrhea– Hepatomegaly (enlarged liver)
![Page 16: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/16.jpg)
Fascioliasis
![Page 17: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/17.jpg)
Fasciola hepatica Egg
![Page 18: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/18.jpg)
Fasciola hepatica
![Page 19: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/19.jpg)
Fasciola hepatica
![Page 20: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/20.jpg)
Key for Images• Key• AC=acetabulum (ventral sucker) • IN=intestine • CE=cecum • OS=oral sucker • CL=collar • OV=ovary • CS=cirrus sac • PH=pharynx • EB=excretory bladder • SR=seminal receptacle • EG=eggs (within uterus) • TE=testes • ES=esophagus • UT=uterus • GA=genitoacetabulum • VT=vitellaria
![Page 21: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/21.jpg)
Fasciolopsiasis
• Fasciolopsis buski
• Light infections are asymptomatic
• Heavy infections– Diarrhea, abdominal pain, fever and ascites– Intestinal obstruction can occur
• Eggs indistinguishable from Fasciola hepatica
![Page 22: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/22.jpg)
Fasciolopsis and Fasciola Eggs
Fasciolopsis Fasciola
![Page 23: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/23.jpg)
Fasciolopsis buski
![Page 24: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/24.jpg)
Fasciolopsiasis
![Page 25: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/25.jpg)
• Dicrocoelium dendricitum
• Most common in grazing ruminants– Rare in humans, carnivores and other
herbivores
• Worldwide distribution
• Metacercariae in ants cause change in behavior
Dicrocoeliasis
![Page 26: Trematodes. Schistosomiasis Caused by blood flukes –Most common S. haematobium –Africa and Middle East S. japonicum –Far east Asia S. mansoni –South America,](https://reader036.vdocument.in/reader036/viewer/2022062422/56649f155503460f94c2b61e/html5/thumbnails/26.jpg)
Dichrocoeliasis