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Table 1 PCR results among microscopy-diagnosed Plasmodium malariae/ Plasmodium knowlesi* , Plasmodium falciparum and Plasmodium vivax mono-infections, and mixed species infections, July 2011-December 2013

From: Changing epidemiology of malaria in Sabah, Malaysia: increasing incidence of Plasmodium knowlesi

 

Microscopy result

 

PCR result

Pm/Pk*

Pf

Pv

Mixed infections

Total

Pk

924 (85)

32 (21)

33 (38)

23 (56)

1012

Pf

30 (2.8)

101 (65)

2 (2.3)

3 (7.3)

136

Pv

43 (4.0)

4 (2.6)

42 (48)

7 (17)

96

Pm

7 (0.6)

0 (0)

0 (0)

0 (0)

7

Pk/Pv

2 (0.2)

1 (0.1)

0 (0)

0 (0)

3

Pk/Pf

3 (0.3)

0 (0)

0 (0)

0 (0)

3

Pf/Pv

0 (0)

0 (0)

2 (2.3)

0 (0)

2

Pf/Pm

1 (0.1)

0 (0)

0 (0)

0 (0)

1

P. genus #

31 (2.9)

9 (5.8)

3 (3.4)

6 (15)

49

Negative

41 (3.8)

9 (5.8)

5 (5.7)

2 (4.9)

57

Total

1082

156

87

41

1366

  1. Numbers are N (%). Microscopy results were obtained from data provided on the PCR request form. Only PCR request forms that stated a species-specific microscopy result (67% of request forms) were included in this analysis. Pk = P. knowlesi, Pf = P. falciparum, Pv = P. vivax, Pm = P. malariae.
  2. *Microscopic diagnoses of P. knowlesi and P. malariae were considered as a single group.
  3. #Samples found to be Plasmodium-positive by PCR but negative in the species-specific PCR assays.