M. Soleimani-Ahmadia, H. Vatandoosta, M. Shaeghia, A. Raeisic, F. Abedib, M.R. Eshraghiana, A. Madanib, R. Safari, M.A. Oshaghia, M. Abtahia, H. Hajjarane
Acta Tropica 123 (2012) 146– 153
In the Olyset net study area, there was a signiﬁcant reduction of 41.1%, 54.4%, 59.39% and 64.1% in the indoor-resting density of A. culicifacies, A. stephensi, A. dthali and A. superpictus, respectively, with an overall reduction of 39.3% in total mosquitoes in comparison with untreated net area. A signiﬁcant reduction was also observed in human blood index of vector species in the Olyset net villages. Bioefﬁcacy test results of Olyset nets showed that the median knockdown time was 1.48 and 3.25 min, while the average mortality rate was 100% and 72.3% ± 7.07 in baseline and after 1 year of intervention, respec-tively. The average permethrin content reached to 68.31% (683.1 mg/m2) of the initial insecticide dose of 937 ± 21.69 mg/m2 (nearly 1000 mg/m2) at the end of intervention.
Malaria incidence was reduced by 96.6% and 64.8% in the village with Olyset nets and in the villages with untreated nets, respectively. During intervention period, there was a reduction of 93.2% in malaria incidence in Olyset net area as compared to the untreated area.
Field evaluation of permethrin long-lasting insecticide treated nets (Olyset™) for malaria control in an endemic area, southeast of Iran