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Table 1 WHO insecticide susceptibility test results on 1–3 day old F1 An. sinensis reared from females collected from the study area in 2010

From: A potential threat to malaria elimination: extensive deltamethrin and DDT resistance to Anopheles sinensis from the malaria-endemic areas in China

Province

County

Deltamethrin (0.25% w/v)a

Resistance statusb

DDT (4%w/v)a

Resistance statusb

Total(n)

(%) mort

95% CI

 

Total(n)

(%) mort

95% CI

 

Hubei

Guangshui

102

5.96

6.04~5.88

R

97

9.29

9.25~9.33

R

Henan

Yongcheng

108

20.35

20.47~20.23

R

    

Hunan

Heshan

107

28.57

28.89~28.25

R

101

23.67

23.52~23.82

R

Jiangsu

Sihong

96

35.72

35.79~35.65

R

106

47.62

47.42~47.82

R

Jiangxi

Jinxian

107

12.35

12.40~12.30

R

102

10.72

10.64~10.80

R

Sichuan

Minshan

92

64.54

57.82~57.18

R

    

Shanghai

Songjiang

80

57.5

64.84~64.24

R

120

73.61

73.31~73.91

R

Yunnan

Ninger

100

45.84

45.96~45.72

R

88

52.28

52.22~52.34

R

Susceptible reference strain

107

100.00

 

S

101

100.00

  
  1. Results expressed as % mortality 24 hr post exposure.
  2. aWHO diagnostic concentration . bS = susceptible; R = resistant.