Diagnostic Findings [Last Modified: ]
Malaria
[Plasmodium falciparum] [Plasmodium knowlesi] [Plasmodium malariae] [Plasmodium ovale] [Plasmodium vivax]
Causal Agent Life Cycle Geographic Distribution Clinical Features Laboratory Diagnosis Treatment

Schizonts of P. ovale can be similar to P. vivax, although tend to be smaller and contain fewer merozoites (4-16, on average 8).  Elongation to an oval shape and fimbriation are common.  Schüffner's dots can be observed with proper staining.  Pigment is lighter and less coarse, similar to P. vivax.

Plasmodium ovale schizonts

A

A: Schizonts of P. ovale.  Figs16-22: Developing schizonts; Fig. 23: Mature schizont.
Illustrations from: Coatney GR, Collins WE, Warren M, Contacos PG. The Primate Malarias. Bethesda: U.S. Department of Health, Education and Welfare; 1971.

Plasmodium ovale schizonts in thick blood smear Plasmodium ovale schizonts in thick blood smear
B C

B, C: Schizonts of P. ovale in thick blood smears.

Plasmodium ovale schizonts in thin blood smear Plasmodium ovale schizonts in thin blood smear
D E

D, E: Schizonts of P. ovale in thin blood smears.

 
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