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The role of human and mosquito behaviour in the efficacy of a house-based intervention: Lethal House Lure for Malaria Mosquitoes

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  • Antoine M.G. Barreaux
  • Welbeck A. Oumbouke
  • N'Guessan Brou
  • Innocent Zran Tia
  • Ludovic P. Ahoua Alou
  • Dimi Theódore Doudou
  • Alphonsine A. Koffi
  • Raphaël N'Guessan
  • Eleanore D. Sternberg
  • Matthew B. Thomas


Publication details

JournalPhilosophical Transactions of the Royal Society B: Biological Sciences
DateAccepted/In press - 15 Jun 2020
DateE-pub ahead of print - 28 Dec 2020
DatePublished (current) - 15 Feb 2021
Issue number1818
Early online date28/12/20
Original languageEnglish


Housing improvement such as blocking eaves and screening windows can help in reducing exposure to indoor biting mosquitoes. The impacts of physical barriers could potentially be boosted by the addition of a mechanism that kills mosquitoes as they attempt to enter the house. One example is to combine household screening with EaveTubes, which are insecticide-treated tubes inserted into closed eaves that attract and kill host-searching mosquitoes. The epidemiological impact of screening + EaveTubes is being evaluated in a large cluster randomized trial in Cote d'Ivoire. The study presented here is designed as a complement to this trial to help better understand the functional roles of screening and EaveTubes. We began by evaluating householder behaviour and household condition in the study villages. This work revealed that doors (and to some extent windows) were left open for large parts of the evening and morning, and that even houses modified to make them more 'mosquito proof' often had possible entry points for mosquitoes. We next built two realistic experimental houses in a village to enable us to explore how these aspects of behaviour and household quality affected the impact of screening and EaveTubes. We found that screening could have a substantial impact on indoor mosquito densities, even with realistic household condition and behaviour. By contrast, EaveTubes had no significant impact on indoor mosquito density, either as a stand-alone intervention or in combination with screening. However, there was evidence that mosquitoes recruited to the EaveTubes, and the resulting mortality could create a community benefit. These complementary modes of action of screening and EaveTubes support the rationale of combining the technologies to create a 'Lethal House Lure'. This article is part of the theme issue 'Novel control strategies for mosquito-borne diseases'.

Bibliographical note

Publisher Copyright:
© 2020 The Authors.

    Research areas

  • EaveTubes, housing improvement, human behaviour, mosquito behaviour, screening, vector control

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