Table 2

Comparison of Olyset and alphacypermethrin treated nets against Anopheles gambiae in experimental huts.


Untreated net
New alphacypermethrin
1.5 year alphacypermethrin
New Olyset
7 year Olyset

Total females caught
112
93
138
177
165
Females caught/night
1.9a
1.5a
2.3a
2.9a
2.7a
% Inside net
8.9a
1.1b
0.7b
0b
0b
% In veranda and exit traps (95% C.I.)
91.1a (85.8 – 96.4)
94.6ab (90.0 – 99.2)
97.1b (94.3 – 99.9)
98.3b (96.4 – 100.2)
97.0b (94.5 – 99.6)
% Insecticide induced exophily
-
39.3
67.5
81.0
66.1
% Blood fed (95% C.I.)
26.8a (18.6 – 35.0)
8.6b (2.9 – 14.3)
18.8ab (12.3 – 25.4)
15.8b (10.4 – 21.2)
49.5c (40.9 – 56.1)
% Blood feeding inhibition
-
67.9
29.9
40.9
0
% Mortality (95% C.I.)
3.6a (0.13 – 7.0)
72.0bc (62.9 – 81.2)
69.6c (61.9 – 77.2)
62.7b(55.8 – 69.8)
40.0d (32.5 – 47.5)
% Mortality (corrected for control)
-
71.0
68.4
61.3
37.9

Numbers in the same row sharing a letter superscript do not differ significantly (P > 0.05)

Malima et al. Malaria Journal 2008 7:38   doi:10.1186/1475-2875-7-38