Skip to main content

Table 2 Prevalence of Plasmodium falciparum infection according to blood group and parity

From: Reduced prevalence of placental malaria in primiparae with blood group O

 

Blood group, primiparae

Blood group, multiparae

 

O

Non-O

O

Non-O

  

All

B

A

AB

 

All

B

A

AB

No.

174

126

72

46

8

283

237

111

102

24

P. falciparum infection, placental blood (%)

        

 Microscopy positive

42.5

50.0

52.8

43.5

62.5

30.0

27.0

31.5

21.6

29.2

 Haemozoin positive

36.2

50.8*

52.8*

50.0

37.5

24.0

24.9

28.8

17.6

37.5

 PCR positive

60.3

70.6

65.3

76.1*

87.5

55.5

58.2

60.4

54.9

62.5

 Any positive finding†

61.5

76.2*

69.4

84.8*

87.5

57.6

61.6

64.0

57.8

66.7

P. falciparum infection, peripheral blood (%)

        

 Microscopy positive

24.1

29.4

33.3

26.1

12.5

17.0

11.4

14.4

8.8*

8.3

 PCR positive

54.6

65.1

62.5

69.6

62.5

50.5

49.4

52.3

45.1

54.2

  1. *Comparison to blood group O, P < 0.05; †, parasitaemia or haemozoin by microscopy, or positive PCR. Parity data were missing for seven women.