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Table 1 Six districts that have had two or more rounds of indoor residual spraying (IRS)

From: Increasing insecticide resistance in Anopheles funestus and Anopheles arabiensis in Malawi, 2011–2015

District IRS rounds Year(s) sprayed Insecticide sprayed
Mangochi 2 2010, 2012 Alphacypermethrin
Chikwawa 2 2010, 2012 Alphacypermethrin
Salima 2 2010, 2012, 2013 Lambdacyhalothrin; pirimiphos-methyl
Nkhotakota 5 2007–2011 Alphacypermethrin; lambdacyhalothrin; pirimiphos-methyl
Nkhata Bay 2 2010, 2012 Alphacypermethrin
Karonga 2 2010, 2012 Alphacypermethrin