Question

Describe erythrocytic phase of Plasmodium vivax

Answer 1

Plasmodium completes its lifecycle in two hosts (digenetic): Man and female Anopheles mosquito.
1. Primary or definitive host:
Female Anopheles mosquito is the primary host of Plasmodium in which it completes its sexual life cycle.
2. Secondary or Intermediate host:
Man is the secondary host of plasmodium in which it completes its asexual life cycle.
The lifecycle of Plasmodium can be divided into three phases:
1. Asexual sehizogony
2. Sexual gamogony
3. Asexual sporogony

Erythrocytic schizogony (phase) :-
As stated above, the erythrocytic schizogony begins when the RBC’s of blood are attacked either by pre-erythrocytic cryptozoites or by exo-erythrocytic micro-metacryptozoites. It takes normally in 8 to 12 days after above 2 phases.

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