Käse, S and Russell, SJ (2014) Modes of hole formation in long-lasting insecticidal nets (LLINs) retrieved from South Eastern Ghana. Parasites and Vectors, 7 (547). 1 - 11. ISSN 1756-3305
Abstract
Background: Long-lasting insecticidal nets (LLINs) are expected to provide biological efficacy for at least three years in the field and be sufficiently durable to maintain physical protection. Unfortunately, LLINs structurally deteriorate during use accumulating holes. Hitherto, definitive identification of the causes of hole formation has been difficult based upon qualitative surveys. Methods: In this preliminary study, optical and scanning electron microscopy of damage in used polyester (PET) and polyethylene (PE) LLINs randomly collected via a household survey from South Eastern Ghana (n =100) were utilised to identify the cause of individual holes. Results: Multiple damage mechanisms were identified. In both PET and PE LLINs, the majority of holes were initiated by filament fracture (ductile failure and cutting) and thermal damage. Conclusions: No strong correlation was found between the bursting strength of retrieved LLINs and overall hole frequency in either the PET or PE nets suggesting that bursting strength is an unreliable predictor of resistance to hole formation if used as a sole parameter.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2014 Käse and Russell; licensee BioMed Central. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
Keywords: | Insecticide-treated bednets; Mosquito nets; Damage; Defect; Holes |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Arts, Humanities and Cultures (Leeds) > School of Design (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 17 Mar 2015 10:52 |
Last Modified: | 22 Oct 2019 13:46 |
Published Version: | http://dx.doi.org/10.1186/s13071-014-0547-x |
Status: | Published |
Publisher: | BioMed Central |
Identification Number: | 10.1186/s13071-014-0547-x |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:83458 |