Myanmar Health Sciences Research Journal
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Aims of MHSR Journal
  • To serve as an important medium for the publication of original research in the field of medical science and health research, thus filling gaps in health knowledge for effective utilization of research findings
  • To impart current medical knowledge and updated scientific information obtained from research to health professionals for better and appropriate health care management
  • To disseminate recent basic, applied and social research findings among health personnel of different strata for enhancing worldwide health development


Archives   2017

Myanmar   Health   Sciences   Research   Journal

Volume   29,  Number   1

TITLE:   Comparison of Bio-efficacy of PermaNet 2.0 and PermaNet 3.0 Long Lasting Insecticide Nets against Anopheles dirus
AUTHOR:   Maung Maung Mya, Ye Ye Myint, Thu Zar Nyein Mu, Sein Thaung, Yan Naung Maung Maung & Thaung Hlaing
SOURCE:   Myanmar Health Sciences Research Journal, Vol. 29, No. 1, 2017
ABSTRACT:   Long lasting insecticidal nets (LLINs) and insecticide treated bet nets have emerged as a potent tool globally in preventing morbidity and mortality due to malaria. The efficacy of the nets is depending on the washing frequency and duration of the nets used. For this purpose, we have tested the bio-efficacies of unwashed and washed PermaNet 2.0 and PermaNet 3.0 against laboratory-reared Anopheles dirus from Mudon Township, Mon State in laboratory from June 2013 to December 2014. Zero to 30 times washing (14 days interval) of LLINs nets and cone bio-assay test were done according to WHO 2005 standard method. Result found that An. dirus are susceptible to DDT4%, deltamethrin 0.05%, permethrin 0.75% and cyfluthrin 0.15%. Before and after repeated washing of both nets, knockdown and mortality rates of An. dirus were persisted 100% to unwashed and after 20 washes but the killing ability was gradually decline after 25 to 30 washes (90% to 55% for PermaNet 2.0 and 90% to 70% PermaNet 3.0). Laboratory cone bioassays confirmed the loss of biological activity of the PBO/deltamethrin-treated top panel after 25 to 30 times washing although killing ability of top panel was higher than the deltamethrin-treated side panel (95% to 75% for top and 85% to 65% for side panels).The bio-efficacy of PermaNet 3.0 showed no difference to PermaNet 2.0 when either unwashed or after 20 washes. Both products were highly protective 90% killing against main vector of An. dirus to 25 washes. In Myanmar, malaria is highly affected in deep forest areas, borderline areas and hard-to-reach areas where biological control methods are not possible. Effective alternative methods as deltamethrin treated PermaNet 2.0 and PermaNet 3.0 LLINs nets are required to distribute in these areas for controlling malaria transmission and major vectors of malaria.
SUBJECT HEADINGS:   PermaNet 2.0, PermaNet 3.0, Bio-efficacy, Knockdown, Mortality
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Vision : Achieving a healthier nation through application of research findings          Mission Statement : To Develop and promote solutions to the major health problems of Myanmar