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Table 3 Determination of deltamethrin and PBO content on mosquito nets in the three experimental hut trials.

From: Field efficacy of a new mosaic long-lasting mosquito net (PermaNet® 3.0) against pyrethroid-resistant malaria vectors: a multi centre study in Western and Central Africa

Country Treatment Target dose* Deltamethrin/PBO content (g/kg) Loss of active ingredient (%)
   g/kg (IC95) Before washing
and testing
After testing g/kg (IC95)
Malanville
(Benin)
Untreated net 0 <0.01 <0.01  
  Permanet 2.0 1.8 [1.35-2.25] 2.09 1.74 17%
  Permanet 2.0 20× 1.8 [1.35-2.25] 2.41 0.99 59%
  Permanet 3.0 2.8 [2.1-3.5] 2.61 2.32 11%
  Permanet 3.0 Roof 4 [3-5] 3.69 3.00 19%
  Permanet 3.0 20× 2.8 [2.1-3.5] 2.58 0.53 79%
  Permanet 3.0 roof 20× 4 [3-5] 3.69 3.16 14%
  CTN exhausted 0.8 [0.6-1.0] 0.59 0.09 85%
  PBO Permanet 3.0 25 [18.75-31.25] 20.8 23.1 +11%
  PBO Permanet 3.0 20× 26 [18.75-31.25] 20.7 12.4 40%
Pitoa
(Cameroon)
Untreated net 0 <0.01 <0.01  
  Permanet 2.0 1.8 [1.35-2.25] 2.53 2.51 1%
  Permanet 2.0 20× 1.8 [1.35-2.25] 2.65 0.41 85%
  Permanet 3.0 2.8 [2.1-3.5] 2.44 2.50 -3%
  Permanet 3.0 Roof 4 [3-5] 3.21 3.22 0%
  Permanet 3.0 20× 2.8 [2.1-3.5] 2.48 0.33 87%
  Permanet 3.0 roof 20× 4 [3-5] 3.38 2.57 24%
  CTN exhausted 0.8 [0.6-1.0] 0.88 0.08 91%
  PBO Permanet 3.0 25 [18.75-31.25] 26.0 29.8 +15%
  PBO Permanet 3.0 20× 26 [18.75-31.25] 28.0 17.7 37%
Vallée du kou
(Burkina Faso)
Untreated net 0 <0.01 <0.01  
  Permanet 2.0 1.4 [1.05-1.75] 1.31 1.32 -1%
  Permanet 2.0 20× 1.4 [1.05-1.75] 1.30 0.27 79%
  Permanet 3.0 2.8 [2.1-3.5] 2.89 2.94 +2%
  Permanet 3.0 Roof 4 [3-5] 4.33 4.07 6%
  Permanet 3.0 20× 2.8 [2.1-3.5] 3.10 0.90 71%
  Permanet 3.0 roof 20× 4 [3-5] 4.18 3.36 20%
  CTN exhausted 0.8 [0.6-1.0] 0.72 0.11 85%
  PBO Permanet 3.0 25 [18.75-31.25] 23.1 20.4 12%
  PBO Permanet 3.0 20× 26 [18.75-31.25] 22.9 15.1 34%
  1. * Target dose for Permanet 2.0 was 1.8 g/kg ± 25% for 75 denier's nets in Benin and Cameroon and 1.4 g/kg ± 25% for 100 deniers net in Burkina Faso