3-7.
COMMON PARASITES OF CLASS TREMATODA
ORGANISM 1--Schistosoma japonicum
GENERAL CHARACTERISTICS
COMMON NAME: Oriental blood fluke
GEOGRAPHICAL DISTRIBUTION: Far East
PATHOGENESIS: Embolic eggs cause more severe lesions than other schistosome
splenomegaly, cellularspecies, infiltration of vital organs; liver f
ibrosis and cirrhosis, infiltration, ulceration.
HABITAT: Venules surrounding the small intestine.
INTERMEDIATE HOST
FIRST: Snail (Oncomelaria).
SECOND: None.
RESERVOIR HOST: Mammals.
INFECTIVE FORM: Cercaria.
MODE OF INFECTION: Active penetration.
SPECIMEN OF CHOICE: Feces.
Figure 3-10. Life cycle of Schistosoma japonicum.
MD0842
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