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The Microscopic Diagnosis of Malaria

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Course Introduction   |   Overview   |   Plasmodium falciparum   |   Plasmodium vivax

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Lesson 3 Plasmodium vivax Rare Forms, Thick Film

This is an ookinete, not found circulating in a patient. Instead, it is usually formed in the stomach of mosquito when an ingested macrogametocyte is fertilized by a microgamete. This is a motile, fusiform stage that resembles a macrogametocyte of P. falciparum. It can be distinguished by the concentration of pigment at one end and not centrally located as in a gametocyte.

Plasmodium vivax rare forms, thin film

F

pigment

F

nucleus