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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.