Sunday, March 22, 2009

Introduction to Parasitology - HOST

-Definitive host:
--Parasite reaches sexual maturity or undergoes sexual reproduction.

-Intermediate host:
--Usually essential to parasite's life cycle.
--Undergoes development to juvenile but not mature stages.

-Vector:
--Carry disease organisms from an infected animal to non-infected animal.
--Biological vector & Mechanical vector

-Paratenic Host:
--Optional to parasite's life cycle.
--Juvenile stage may persist but do not develop.

-Transport host:
--No development occurs & may be shed at any time.

-Reservior host:
--Where parasites maintain in the nature.
--Sources of individual's new cases.

-Abnormal host:
--Can't develope to mature stages.
--Usually found in other host species.

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