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Table 2 Mean final percent mortality of Anopheles arabiensis by wall location following 30 min contact bioassay with K-Othrine Polyzone (KOPZ) applied on two different wall surfaces under household conditions

From: Variable residual activity of K-Othrine® PolyZone and Actellic® 300 CS in semi-field and natural conditions in the Democratic Republic of the Congo

House Wall location Percent mortality* by week
0 2 4 6 8 10 14 18 20 22 32 35 38 41 43 46 48
Painted cement Top 100 96.7 100 100 100 100 100 100 93.3 100 100 93.3 93.3 100 88.9 70 50
Painted cement Middle 97.5 100 100 100 100 100 100 100 93.3 100 100 100 90 96.7 100 83.3 80
Painted cement Bottom 100 100 100 100 100 100 100 93.3 93.3 96.7 100 40 40 26.7 11.1 0 6.7
Baked clay Top 100 96.7 100 100 100 100 100 83.3 53.3 70 NT 84 13.3 19.3 3.5 33.3 23.3
Baked clay Middle 100 96.7 90 100 100 100 100 60 80 80 NT 52 16.7 7.7 3.5 16.3 3.3
Baked clay Bottom 100 96.7 93.3 96.7 100 90 100 53.3 50 100 NT 16 10 0 3.5 6.7 6.7
Mean Temp (°C) 20.3 21 20 22.8 24 25.9 25.4 24.5 24.8 23.5 25 24.5 25.3 24.7 23.2 22.4 21.8
Mean % Humidity 53.5 56 45.5 43.3 43.3 62.3 44.8 74 79.8 79 80.8 80.5 81 72.8 63.8 56.8 55.5
  1. *Final mortality adjusted if control mortality is between 5 and 20%
  2. NT: Not tested