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Table 4 Distribution of P. falciparum msp-1 block 2 allelic type among age groups of P. falciparum infected patients from Mauritania

From: Polymorphism of the merozoite surface protein-1 block 2 region in Plasmodium falciparum isolates from Mauritania

  Age group (years)  
Allelic type < 5 5-19 20-39 ≥40 Total
n (%) n (%) n (%) n (%) n (%)
K1 1(0.9) 8(7.1) 1(0.9) 2(1.8) 12(10.6)
Mad20 0 1(0.9) 2(1.8) 0 3(2.6)
Ro33 0 2(1.8) 2(1.8) 1(0.9) 5(4.4)
K1/Mad20 1(0.9) 17(15.0) 6(5.3) 0 24(23.0)
K1/Ro33 1(0.9) 10(8.8) 6(5.3) 2(1.8) 19(16.8)
Mad20/Ro33 0 2(1.8) 1(0.9) 0 3(2.6)
K1/Mad20/Ro33 1(0.9) 23(20.3) 14(12.4) 9(7.9) 47(41.6)
Total 4(3.5) 63(55.7) 32(28.4) 14(12.4) 113(100.0)
Total K1 4(100.0) 58(92.1) 27(84.3) 13(92.8) 102(90.3)
Total Mad20 2(50.0) 43(68.2) 23(71.8) 9(64.3) 77(68.1)
Total Ro33 2(50.0) 37(58.7) 23(71.8) 12(85.7) 74(65.5)
Multiclonal isolates 3(2.6) 52(46.0) 27(23.9) 11(9.7) 93(82.3)
MOI 3.25 3.21 3.03 3.37 3.2
  1. n: number of individuals; MOI: multiplicity of infection.