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
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 ef...
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| Main Authors: | , , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
08 Oct 2020
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| In: |
Global health action
Year: 2020, Volume: 13, Pages: 1-5 |
| ISSN: | 1654-9880 |
| DOI: | 10.1080/16549716.2020.1829828 |
| Online Access: | Resolving-System, Volltext: https://doi.org/10.1080/16549716.2020.1829828
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| Author Notes: | Peter Dambach, Volker Winkler, Till Baernighausen, Issouf Traoré, Saidou Ouedraogo, Ali Sié, Rainer Sauerborn, Norbert Becker & Valérie R. Louis |
| Summary: | 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. |
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| Item Description: | Gesehen am 19.11.2020 |
| Physical Description: | Online Resource |
| ISSN: | 1654-9880 |
| DOI: | 10.1080/16549716.2020.1829828 |