Quality assessment of long-lasting deltamethrin impregnated insecticide nets in Lagos, Nigeria

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Akinleye, M.O.
Komolafe, M.A.
Oluwole, D.O.
Okubanjo, O.O.
Coker, H.A.
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Current statistics from World Health Organization (WHO) indicated that malaria mortality in Africa has decreased by 54% across all age groups. One of the concerted efforts for this positive control is the use of long-lasting insecticide-treated nets. The objective of this study was therefore to evaluate and compare certain physicochemical characteristics of three longlasting impregnated Nets (LLINs) for quality control assessment and monitoring. The physicochemical characteristics of the three commercially available deltamethrin LLINs coded PT, XT and NP such as gram per square meter, mesh count, dimension nets and the deltamethrin content were evaluated in compliant with World Health Organization Pesticide Evaluation Scheme (WHOPES). The extracted deltamethrin active ingredient was assayed using a validated high performance liquid chromatographic method. Results obtained showed that the dimensional size of net PT and NP were not in conformity with the WHO specifications while net XT complied. All the three nets however satisfied the WHO minimum specifications for mesh count. Only Nets PT and XT conformed to the specified target dose of deltamethrin content in the total nets cut randomly from the nets while Net NP deviated from the specified target dose. In the same sequence Net PT and XT also satisfied the WHO's recommendation for 20 number of washes by not falling below the efficacy concentration of 2g/kg specified by WHOPES. Hence it is concluded that there is need to ascertain the quality of mosquito nets being imported into the country as many of these available in circulation may not meet the quality specifications.
Staff publications
Deltamethrin , Malaria , Long-lasting Insecticide Nets (LLINs) , Research Subject Categories::NATURAL SCIENCES::Chemistry
Akinleye, M.O. [Et...al] (2017). Quality assessment of long-lasting deltamethrin impregnated insecticide nets in Lagos, Nigeria. Analytical Science Journal, Vol.2(1):73 - 80pp.