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Entomological Evaluation of Permanet 2.0® and K-O Tab 1-2-3® Treated Nets in Comparison to Nets Conventionally Treated With Deltamethrin, After Repeated Washing Publisher Pubmed



Kayedi MH1 ; Khamisabadi K2, 3, 4 ; Dehghani N2, 4, 5 ; Haghdoost AA6
Authors
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Authors Affiliations
  1. 1. Razi Herbal Medicines Research Center, Department of Parasitology, School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
  2. 2. Kazeroun field station, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. I.R. Iran National Institute of Health Research, Tehran, Iran
  4. 4. Kazeroun field station, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Kazeroun Health Center, Shiraz University of Medical Sciences, Shiraz, Iran
  6. 6. Research Center for Modeling in Health, Kerman University of Medical Sciences, Kerman, Iran

Source: Pathogens and Global Health Published:2015


Abstract

The residual insecticidal power of two types of ITNs (PermaNet 2.0® (PN2) and K-O Tab 1-2-3® (KO 123)), compared to K-O Tab® (KO) treated nets, was assessed. The nets were tested unwashed, and after being washed, by hand 5, 15 and 21 times, respectively. After each wash, the nets were dried vertically on a line, in the shade. Two types of bioassays (mean median knock down times (MMKDT) and mortality 24 hours after a 3-minute exposure (%mortality)) were used, along with reared female Anopheles stephensi. The number of washes had a great impact on MMKDT and %mortality of all types of nets. This impact was greater for conventionally treated nets, indicating that PN2 and KO 123 nets are significantly more wash resistant than KO nets after 21 washes. There was no significant difference between PN2 and KO 123 with respect to %mortality 24 hours after a 3-minute exposure at 0, 15 and 21 washes. Similarly, the same results were obtained for MMKDT, and the differences between PN2 and KO 123 were not statistically significant. This study demonstrates that the efficacy of KO 123 nets is as beneficial as the efficacy of PN2 nets up to 21 washes. © W. S. Maney & Son Ltd 2015.
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