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Table 2 Frequency (% (n)) of kdr alleles in three An. sinensis population from Henan province

From: Knockdown resistance of Anopheles sinensis in Henan province, China

County Sample size(n) L1014 TTG L1014C (TGT) L1014F (TTT + TTC) Population kdr mutation frequency (TGT + TTT + TTC + TGG)
Kaifeng 49 0 (0) 26.53 (13) 73.47 (36) 100 (49)a
Tongbai 29 62.07 (18) 13.79 (4) 24.14 (7) 37.93 (11)
Tanghe 14 7.14 (1) 50.00 (7) 42.86 (6) 92.86 (13)b
Pingqiao 11 45.45 (5) 36.36 (4) 18.18 (2) 54.55 (6)
Shihe 6 50.00 (3) 16.67 (1) 33.33 (2) 50.00 (3)
Yongcheng 16 37.50 (6) 31.25 (5) 31.25 (5) 62.50 (10)
Total 125 26.40 (33) 27.20 (34) 46.40 (58) 73.60 (92)
  1. Note: a. the frequency of kdr mutation in Kaifeng county was higher than that in Tongbai, Pingqiao, Shihe, and Yongcheng county (P < 0.001); b. the frequency of kdr mutation in Tanghe county was higher than that in Tongbai county (P = 0.001).