Schistosoma japonicum (Cont'd)
Figure 3-11. Stages of Schistosoma japonicum. (concluded)
ORGANISM 2--Schistosoma mansoni
GENERAL CHARACTERISTICS
COMMON NAME: Manson's blood fluke.
GEOGRAPHICAL DISTRIBUTION: Central and North Africa; Equatorial regions of
South America; West Indies and Puerto Rico.
PATHOGENESIS: Infiltration of vital organs; hemorrhages, anemia, hepato-
splenomegaly, liver cirrhosis, fibrous tissue proliferation, ulcerations.
HABITAT: Venules surrounding the large intestine.
INTERMEDIATE HOST
FIRST: Snail (Biomphalaria, Australorbis).
SECOND: None.
RESERVOIR HOST: Rarely monkeys.
INFECTIVE FORM: Cercaria.
MODE OF INFECTION: Active penetration.
SPECIMEN OF CHOICE: Feces.
MD0842
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