Biological larviciding against malaria vector mosquitoes withBacillus thuringiensis israelensis (Bti)- Long term observations and assessment of repeatability during an additional intervention year of a large-scale field trial in rural Burkina Faso

• Verfasst von: Dambach, Peter [VerfasserIn]
• Verfasst von: Winkler, Volker [VerfasserIn]
• Verfasst von: Bärnighausen, Till [VerfasserIn]
• Verfasst von: Traoré, Issouf [VerfasserIn]
• Verfasst von: Ouedraogo, Saidou [VerfasserIn]
• Verfasst von: Sié, Ali [VerfasserIn]
• Verfasst von: Sauerborn, Rainer [VerfasserIn]
• Verfasst von: Becker, Norbert [VerfasserIn]
• Verfasst von: Louis, Valérie R. [VerfasserIn]
• Titel: Biological larviciding against malaria vector mosquitoes withBacillus thuringiensis israelensis (Bti)- Long term observations and assessment of repeatability during an additional intervention year of a large-scale field trial in rural Burkina Faso
• Verf.angabe: Peter Dambach, Volker Winkler, Till Baernighausen, Issouf Traoré, Saidou Ouedraogo, Ali Sié, Rainer Sauerborn, Norbert Becker & Valérie R. Louis
• E-Jahr: 2020
• Jahr: 08 Oct 2020
• Umfang: 5 S.
• Fussnoten: Gesehen am 19.11.2020
• Titel Quelle: Enthalten in: Global health action
• Ort Quelle: Abingdon : Taylor & Francis Group, 2008
• Jahr Quelle: 2020
• Band/Heft Quelle: 13(2020), Artikel-ID 1829828, Seite 1-5
• ISSN Quelle: 1654-9880
• DOI: doi:10.1080/16549716.2020.1829828
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Biological vector control
• Sach-SW: large scale intervention trial
• Sach-SW: malaria control
• Sach-SW: sub-Saharan Africa
• K10plus-PPN: 173915813X

Abstract

The first line of malaria vector control to date mainly relies on the use of long-lasting insecticidal nets (LLINs) and indoor residual spraying (IRS). For integrated vector management, targeting the vector larvae with biological larvicides such asBacillus thuringiensis israelensis(Bti) can be an effective additional mainstay. This study presents data from the second intervention year of a large-scale trial on biological larviciding withBtithat was carried out in 127 rural villages and a semi-urban town in Burkina Faso. Here we present the reductions in malaria mosquitoes that were achieved by continuing the initial interventions for an additional year, important to assess sustainability and repeatability of the results from the first intervention year. Larviciding was performed applying two different larviciding choices ((a) treatment of all environmental breeding sites, and (b) selective treatment of those that were most productive forAnopheleslarvae indicated by remote sensing based risk maps). AdultAnophelesspp. mosquito abundance was reduced by 77.4% (full treatment) and 63.5% (guided treatment) compared to the baseline year. The results showed that malaria vector abundance can be dramatically reduced using biological larviciding and that this effect can be achieved and maintained over several consecutive transmission seasons.