Table 1 Experimental hut trial results of unwashed and 20-times washed pyrethroid-PBO and pyrethroid-only LLIN against pyrethroid resistant Anopheles gambiae s.s. in M’bé, Côte d’Ivoire

Total no. of females caught

1054

506

519

366

377

Mean no. caught/night

29.2^a

14.0^b

14.4^b

10.2^c

10.5^c

% Deterrence

–

52.0

50.7

65.3

64.2

Total no. of females in veranda

248

279

243

203

244

% Exiting (95% CI)

23.5 (21.0–26.1)^a

55.1 (50.8–59.5)^b

46.8 (42.5–51.1)^c

55.5 (50.4–60.6)^b

64.7 (59.9–69.5)^d

Total no. of blood-fed females

665

206

225

86

89

% Blood-feeding inhibition

–

35.5 (31.3–39.7)

31.4 (27.4–35.4)

62.7 (57.7–67.6)

62.6 (57.7–67.5)

% Personal protection

–

69.0^a

66.2^a

87.1^b

86.6^b

Overall insecticidal effect (%)

–

11.8^a

6.4^b

15.5^a

11.5^a