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Table 1 Results of the insecticide susceptibility tests conducted on wild female Anopheles gambiae s.l mosquitoes

From: Implications of bio-efficacy and persistence of insecticides when indoor residual spraying and long-lasting insecticide nets are combined for malaria prevention

Insecticide tested

Total no. exposed

Knock Down (KD)

Mortality

  

10 min

15 min

20 min

30 min

40 min

50 min

60 min

%KD 60 min

Total no. dead

% Dead

Class

Control

123

0

0

0

0

0

1

1

0.8

1.0

0.8

-

4% DDT

124

0

0

7

44

94

114

118

95.2

124.0

100.0

***

0.75% Permethrin

125

0

8

20

71

95

122

124

99.2

119.0

95.2

**

0.05% Lambda cyhalothrin

123

0

0

2

23

60

81

92

74.8

111.0

90.2

**

0.05% Deltamethrin

96

0

5

16

37

60

74

79

85.9

92

95.8

**

0.4% Dieldrin

124

0

0

0

0

0

2

3

2.4

120.0

96.8

**

  1. 96% of mosquitoes of this species complex in the study area at the time were identified by PCR as Anopheles arabiensis.
  2. Class (Susceptibility grading).
  3. *** The percentage mortality value indicates 100% susceptibility.
  4. ** The percentage mortality value indicates insecticide tolerance and possibility of resistance that needs to be confirmed.