Skip to main content

Table 4 Median percentage mortality (and inter-quartile ranges (IQR)), and the sums of mosquitoes of different taxa killed per night in experimental huts fitted with different IRS and LLIN treatments during the first spray round (dry season tests)

From: Comparative field evaluation of combinations of long-lasting insecticide treated nets and indoor residual spraying, relative to either method alone, for malaria prevention in an area where the main vector is Anopheles arabiensis

 

Mortality of Anopheles arabiensis

Mortality of Culex species

Mortality of Mansonia species

IRS/LLIN combinations

Median (IQR)

Total dead (n)^

Median (IQR)

Total dead$

Median (IQR)

Total dead$

Untreated nets only**

7.1 (3.8 - 14.0)

403 (60)

1.0 (0.0 - 06.2)

77

16.5 (5.5 - 36.9)

170

Olyset® only

11.8 (7.1 - 17.2)

709 (60)

3.9 (0.0 - 08.8)

121

33.3 (6.2 - 50.0)

285

PermaNet 2.0® only

19.5 (13.6 - 26.5)

844 (60)

2.4 (0.0 - 09.0)

87

50.0 (39.6 - 70.1)

343

Icon Life® only

19.0 (12.4 - 27.5)

1028 (60)

2.7 (0.0 - 11.1)

111

50.0 (29.6 - 62.8)

444

Pirimiphos methyl and untreated nets

16.6 (12.1 - 28.7)

836 (40)

9.8 (2.6 - 20.4)

136

42.9 (20.4 - 51.1)

300

Pirimiphos methyl and Olyset®

16.4 (13.1 - 24.9)

980 (40)

7.4 (2.3 - 16.7)

102

41.2 (22.2 - 68.0)

255

Pirimiphos methyl and PermaNet 2.0®

29.0 (18.8 - 36.2)

1196 (40)

6.9 (2.3 - 15.3)

98

71.8 (53.3 - 79.1)

433

Pirimiphos methyl and Icon Life®

21.0 (13.3 - 32.2)

1338 (40)

3.3 (0.3 - 12.5)

108

56.5 (36.6 - 70.3)

433

DDT and untreated nets

14.0 (07.7 - 24.4)

369 (40)

1.4 (0.0 - 13.3)

52

50.0 (18.8 - 66.7)

192

DDT and Olyset®

13.2 (08.8 - 17.2)

411 (40)

3.0 (0.0 - 11.0)

53

46.7 (21.1 - 62.4)

162

DDT and PermaNet 2.0®

17.2 (12.0 - 25.7)

431 (40)

4.2 (0.0 - 12.9)

94

53.8 (36.7 - 66.7)

220

DDT and Icon Life®

12.3 (09.3 - 18.6)

581 (40)

1.8 (0.0 - 08.8)

69

36.1 (20.2 - 50.0)

165

Lambda cyhalothrin and untreated nets

14.8 (10.6 - 22.2)

634 (40)

6.3 (0.3 - 09.9)

106

50.0 (25.0 - 66.9)

304

Lambda cyhalothrin and Olyset®

14.9 (09.6 - 20.6)

755 (40)

6.8 (2.0 - 17.7)

98

66.7 (42.9 - 91.6)

232

Lambda cyhalothrin and PermaNet 2.0®

20.6 (15.3 - 26.5)

802 (40)

6.3 (0.3 - 13.6)

110

64.3 (50.0 - 80.0)

307

Lambda cyhalothrin and Icon Life®

21.6 (16.8 - 26.9)

1055 (40)

5.1 (1.4 - 18.9)

114

62.7 (46.6 - 77.6)

364

  1. ^ The term ‘n’ refers to total number of replicates.
  2. $ The number of replicates (n) was the same as for Anopheles arabiensis.
  3. **Controls refer to unsprayed huts in which volunteer used untreated nets.