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Multicentre studies of insecticide-treated durable wall lining in Africa and South-East Asia: Entomological efficacy and household acceptability during one year of field use

Show simple item record Messenger, L.A. Matias, A. Manana, A.N. Stiles-Ocran, J.B. Knowles, S. Boakye, D.A. Coulibaly, M.B. Larsen, M.-L. Traoré, A.S. Diallo, B. Konaté, M. Guindo, A. Traoré, S.F. Mulder, C.E.G. Le, H. Kleinschmidt, I. Rowland, M. 2019-01-11T09:40:02Z 2019-01-11T09:40:02Z 2012-10
dc.identifier.other Vol. 11(1): pp 358
dc.description.abstract Background: Indoor residual spraying (IRS) is a primary method of malaria vector control, but its potential impact is constrained by several inherent limitations: spraying must be repeated when insecticide residues decay, householders can tire of the annual imposition and campaign costs are recurrent. Durable lining (DL) can be considered an advanced form of long-lasting IRS where insecticide is gradually released from an aesthetically attractive wall lining material to provide vector control for several years. A multicentre trial was carried out in Equatorial Guinea, Ghana, Mali, South Africa and Vietnam to assess the feasibility, durability, bioefficacy and household acceptability of DL, compared to conventional IRS or insecticide-treated curtains (LLITCs), in a variety of operational settings. Methods. This study was conducted in 220 households in traditional rural villages over 12-15 months. In all sites, rolls of DL were cut to fit house dimensions and fixed to interior wall surfaces (usually with nails and caps) by trained teams. Acceptability was assessed using a standardized questionnaire covering such topics as installation, exposure reactions, entomology, indoor environment, aesthetics and durability. Bioefficacy of interventions was evaluated using WHO cone bioassay tests at regular intervals throughout the year. Results: The deltamethrin DL demonstrated little to no decline in bioefficacy over 12-15 months, supported by minimal loss of insecticide content. By contrast, IRS displayed a significant decrease in bioactivity by 6 months and full loss after 12 months. The majority of participants in DL households perceived reductions in mosquito density (93%) and biting (82%), but no changes in indoor temperature (83%). Among those households that wanted to retain the DL, 73% cited protective reasons, 20% expressed a desire to keep theirs for decoration and 7% valued both qualities equally. In Equatorial Guinea, when offered a choice of vector control product at the end of the trial (DL, IRS or LLITCs), DL consistently emerged as the most popular intervention regardless of the earlier household allocation. Conclusions: Just as long-lasting insecticidal nets overcame several of the technical and logistical constraints associated with conventionally treated nets and then went to scale, this study demonstrates the potential of DL to sustain user compliance and overcome the operational challenges associated with IRS. © 2012 Messenger et al.; licensee BioMed Central Ltd. en_US
dc.language.iso en en_US
dc.publisher Malaria Journal en_US
dc.subject Acceptability en_US
dc.subject Durability en_US
dc.subject Durable wall lining en_US
dc.subject Efficacy en_US
dc.subject IRS en_US
dc.subject Malaria control en_US
dc.subject ZeroVector® en_US
dc.title Multicentre studies of insecticide-treated durable wall lining in Africa and South-East Asia: Entomological efficacy and household acceptability during one year of field use en_US
dc.type Article en_US

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  • Epidemiology Department [266]
    The Epidemiology Department contributes to the mission of the institute through basic and applied epidemiological research on, but not limited to, malaria and other diseases of public health importance. It is also home to the Social Science Unit of the Institute, including the Health Support Centre for HIV/AIDS and other communicable and noncommunicable health problems.

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