Schistosoma mansoni

 

This is one of the parasitic trematode blood flukes of the Schistosoma genus that infects man. Others are
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S. mekongi

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S. intercalatum

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S. haematobium

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S. japonicum

Infective cercariae larvae are released from snail host and penetrate skin to enter subcutaneous tissue where they are transformed into schistosomula. Sexually mature worms then enter vein site specific for its species. In S. mansoni they enter intestinal veins where they release their mature ova. The ova then find their way into the lumen of small intestine where they are voided in feces. Outside they seek for their intermediate host the snail, after hatching into miracidia. They can cause morbidity with defecation with morbidity in intestine and liver.

 

 

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