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Table 3 Prevalence of msp-1 block 2 allelic types in Lao PDR

From: Genetic analysis of the merozoite surface protein-1 block 2 allelic types in Plasmodium falciparum clinical isolates from Lao PDR

msp-1 block 2 allelic type

Oudomxay No. (%)

Savannakhet No. (%)

Xekong No. (%)

Total No. (%)

K1

1(6.66)

39(27.86)

24(32.00)

64(27.83)

MAD20

4(26.66)

9(6.43)

14(18.67)

27(11.74)

RO33

1(6.66)

8(5.71)

3(4.00)

12(5.22)

K1 + MAD20

2(13.34)

35(25.00)

8(10.66)

45(19.57)

K1 + RO33

2(13.34)

18(12.86)

5(6.66)

25(10.87)

MAD20 + RO33

2(13.34)

8(5.71)

5(6.66)

15(6.52)

K1 + MAD20 + RO33

1(6.66)

17(12.14)

2(2.66)

20(8.70)

Negative

2(13.34)

6(4.29)

14(18.67)

22(9.57)

Total

15(100.00)

140(100.00)

75(100.00)

230(100.00)

Total K1

6 (40.00)

109(77.86)

39(52.00)

154(66.96)

Total MAD20

9(60.00)

69(49.29)

29(38.67)

107(46.52)

Total RO33

6(40.00)

51(36.43)

15(20.00)

72(31.30)

Multiclonal isolates

7 (46.67)

78 (55.71)

20(26.67)

105(45.65)

MOI

1.2

1.7

1.4

1.6

  1. MOI-Multiplicity of Infection (Number of clones identified as msp1 allelic types, excluding PCR negatives)