Learn about the comparison between Plasmodium Viax and Plasmodium Falciparum.

Comparison # Plasmodium Vivax:

1. Period of incubation in Plasmodium Vivax : 10-17 days

2. Period of schizogony : 48 hours

3. Trophozoite (Ring form): Size – 3 µm

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Cytoplasm opposite the chro­matin dot is thicker. Growing forms very irregular with a vacuole. Actively amoeboid

4. Mature schizont: Larger than a red blood cell

5. Number of merozoites: 12-24. Arranged irregularly in a grape-like cluster

6. Haemozoin pigments: Yellowish brown. Present in fine granules throughout the cytoplasm

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7. Infected red blood cell: Enlarged and pale. Schuffner’s dots present which are small regular and numerous

8. Shape of gametocyte: Spherical or globular

9. Forms found in peripheral blood: Trophozoites, schizonts and gametocytes

10. Type of malaria fever and its effect: Benign tertian. Death rate low

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11. Relapses : Up to 3 years

12. Development in mosquito: 10 days at 25° to 30°C.

Comparison # Plasmodium Falciparum:

1. 8-12 days

2. 24-48 hours

3. Size smaller -1.25-1.5 µm

4. Cytoplasm fine and regular in outline. Often with 2 chro­matin dots. The forms are applique or accole. Multiple infection of red blood cells

5. Smaller than a red blood cell 8-24 or even more. Arranged in a grape-like cluster

6. Dark brown. Present in one solid block around the nu­cleus

7. Usually unaltered. Maurer’s dots present which are large, irregular and fewer

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8. Crescentic

9. Trophozoites and gameto­cytes. Schizonts are rarely seen

10. Malignant tertian & sub-tertian Death rate high

11. 6 months to 1 year 1

12. 0 to 12 days at 27°C.

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