how do larva spread disease?
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Which of the following is not a push factor:
(A) Water shortage
(B) Unemployment
(C) Medical/Educational facilities
(D) Epidemics
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cantonensis spread from rats to snails and slugs that allow the larvae to develop into an infective form. In humans, the larvae spread from the gastrointestinal tract, through the bloodstream, to the CNS where they burrow into the parenchyma after crossing the vessels by a mechanism that is still unclear.
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