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Table 2 Characteristics of P. knowlesi parasites in naturally acquired human infections.

From: Morphological features and differential counts of Plasmodium knowles i parasites in naturally acquired human infections

  Malaria pigment (%) *Chromatin dots (%) **Number of parasites in single erythrocyte (%) Band form trophozoite Appliqué form
Patient code Clumped Scattered Single Double Triple 1 2 3   
KH369 81.5 18.5 71.6 25.8 2.6 92.4 6.8 0.8 Yes Yes
KH364 75.0 25.0 92.2 7.8 0 74.9 20.6 4.5 Yes Yes
KH370 n n 88.9 11.1 0 100.0 - - Yes -
KH412 100.0 0 62.5 37.5 0 100.0 - - Yes Yes
KH433 n n 85.7 14.3 0 100.0 - - - -
KH431 5.6 94.4 89.3 10.7 0 98.2 1.8 - Yes -
KH421 16.7 83.3 81.3 18.7 0 100.0 - - - -
KH422 0 100 0 0 0 100.0 - - Yes -
KH328 0 100 85.7 14.3 0 100.0 - - - -
KH399 33.3 66.7 100.0 0 0 100.0 - - - -
  1. *based on early trophozoites or ring form stages, and these were absent in patient KH422.
  2. **based on early and late trophozoite stages.
  3. n = no pigment because no mature trophozoites were observed.