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Table 5 Summary of tunnel test studies on the five types of net.

From: An experimental hut evaluation of Olyset® nets against anopheline mosquitoes after seven years use in Tanzanian villages

 

Untreated net

New alphacypermethrin

1.5 year alphacypermethrin

New Olyset

7 year Olyset

An. gambiae Kisumu strain

     

Total tested

103

122

103

102

99

% Passage (95% C.I.)

99a (94.7–99.9)

41b (32.1–50.2)

15.5c (9.1–23.9)

27.5d (19.1–37.1)

56.6e (46.2–66.5)

% Passage inhibition

-

59

84

72

43

% Feeding (95% C.I.)

83.5a (74.8–90)

1.6b (0.1–5.7)

1.9b (0.2–6.8)

2.9b (0.6–8.3)

0b (0.0–3.7)

% Feeding inhibition

-

98

98

97

100

% Mortality (95% C.I.)

7.8a (3.4–14.7)

96.7b (91.8–99.1)

81.6c (72.7–88.5)

95.1b (88.9–98.3)b

76.8c (67.2–84.6)

Cx. quinquefasciatus Masimbani strain

     

Total tested

118

118

109

102

104

% Passage (95% C.I.)

78a (69.4–85)

68.6ab (59.5–76.8)

76.1a (67–83.8)

47.1c (37–57.2)

55.8bc (45.6–65.5)

% Passage inhibition

-

12

2

40

28

% Feeding (95% C.I.)

73.7a (64.8–81.4)

61.9ab (52.4–70.7)

74.3a (65–82.2)

37.3c (27.8–47.3)

46.2bc (36.3–56.2)

% Feeding inhibition

-

16

0

49

37

% Mortality (95% C.I.)

0b (0.0–3)

3.4b (0.9–8.4)

0.9b (0–5)

9.8b (4.8–17.2)

5.8b (2.1–12.2)

  1. Numbers in the same row sharing a letter superscript do not differ significantly (P > 0.05).