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Table 4 Comparison between WHO susceptibility and CDC bottle assay data in the present study

From: Comparability between insecticide resistance bioassays for mosquito vectors: time to review current methodology?

Strain

Insecticide

N

% 24 h mortality

% KD at CDC diagn. time

Status

90 %

98 %

  

WHO

CDC

WHO (95 % CI)

CDC (95 % CI)

 

W

C

W

C

ROCK

Permethrin

110

100

96.4 (90.6 - 98.8)

96.0 (89.8, 98.7)

100

S

S

R

S

λ-cyhalothrin

108

100

99.1 (94.3 - 100)

75.0 (65.6 - 82.5)

100

S

S

S

S

Malathion

101

100

100 (96.4 - 100)

100 (96.4 - 100)

100

S

S

S

S

DDT

118

100

67.0 (58.0 - 74.8)

75.0 (65.6 - 82.5)

100

R

S

R

S

KISUMU1

Permethrin

102

100

99.0 (94.1 - 100)

90.0 (82.3 - 94.6)

99

S

S

S

S

λ-cyhalothrin

108

100

98.2 (93.1 - 99.9)

88.0 (80.0 - 93.1)

100

S

S

S

S

Malathion

105

100

100 (96.6 - 100)

100 (96.4 - 100)

91

S

S

S

R

Bendiocarb

107

100

100 (96.6 - 100)

100 (96.4 - 100)

100

S

S

S

S

DDT

110

100

100 (96.7 - 100)

98.0 (92.5 - 99.9)

99

S

S

S

S

STI

Permethrin

104

102

71.2 (61.8 - 79.0)

52.9 (43.3 - 62.3)

100

R

S

R

S

λ-cyhalothrin

95

100

32.6 (24.1 - 42.6)

16.0 (10.0 - 24.6)

100

R

S

R

S

Malathion

110

100

100 (96.7 - 100)

100 (96.4 - 100)

82

S

R

S

R

Bendiocarb

108

100

100 (96.6 - 100)

100 (96.4 - 100)

100

S

S

S

S

DDT

104

100

47.1 (37.8 - 56.6)

60.0 (50.2 - 69.1)

99

R

S

R

S

VK7

Permethrin

100

100

78.0 (68.8 - 85.0)

91.0 (83.5 - 95.3)

96

R

S

R

R

λ-cyhalothrin

49

40

93.9 (82.7 - 98.4)

95.0 (82.4 - 99.4)

100

S

S

R

S

ZANU

Permethrin

103

100

100 (96.5 - 100)

87.0 (78.8 - 92.3)

100

S

S

S

S

DDT

108

100

96. 3 (90.5 - 98.8)

67.0 (57.3 - 75.4)

100

S

S

R

S

  1. Wilson’s method [31] was used to calculate the confidence intervals in the 24 h mortalities