Table 1 Plasmodium falciparum infection and dissemination in field-caught An. plumbeus and laboratory-reared An. gambiae Ngousso

Prevalence (%) of midgut infection (no. positive / no. analysed)

8

67

nd^c

40

4

100

100

87

73

(20/30)

(12/30)

(1/24)

(30/30)

(30/30)

(26/30)

(22/30)

15

75

15

43

10

100

100

67

70

(36/48)

(2/13)

(22/51)

(7/70)

(32/32)

(24/24)

(20/30)

(21/30)

Intensity of infection: Mean no. of oocysts / positive female^d (range)

8

8.9 ± 6.3

nd^c

50.4 ± 56.0

12.0 ± 0

42.4 ± 28.2

71.5 ± 63.3

29.5 ± 23.5

13.7 ± 13.6

(2–25)

(1–171)

(12)

(3–122)

(1–233)

(1–74)

(1–48)

15

5.3 ± 4.9

2.0 ± 0

28.8 ± 14.4

2.4 ± 2.1

22.4 ± 25.2

44.8 ± 36.4

26.4 ± 23.7

10.7 ± 10.1

(1–18)

(2)

(4–63)

(1–6)

(1–112)

(1–146)

(1–79)

(1–45)

Prevalence (%) of females with sporozoites^e (no. positive / no. analysed)

15

83

31

88

57

97

88

67

70

(40/48)

(4/13)

(45/51)

(40/70)

(31/32)

(21/24)

(20/30)

(21/30)

Intensity of infection: Mean no. sporozoites / positive female^f (no. analysed)

15

1,620

nd^c

108

nd^c

11,178

25,623

15,755

950

(12)

(15)

(30)

(30)

(30)

(30)