Table 3.
Overall percentage mortalities for deltamethrin by species and strain based on the use of the standard WHO bioassays at the discriminating (DC), 5× and 10× concentrations. The sample sizes (n) and associated numbers of replicates are given in parentheses. Resistance intensity for each strain is classified as low, moderate or high based on revised criteria
| Species | Strain | Overall % mortality (n; no. replicates) | Resistance intensity | ||
|---|---|---|---|---|---|
| DC | 5× DC | 10× DC | |||
| An. funestus | FUMOZ BASE | 8 (100; 4) | 89.13 (92; 4) | 100 (100; 4) | moderate |
| FUMOZ-R | 4 (100; 4) | 50.81 (124; 5) | 87.25 (102; 4) | high | |
| ZAMF | 23.68 (228; 8) | 35.9 (39; 2) | 80 (25; 1) | high | |
| An. arabiensis | SENN DDT | 54 (100; 4) | 100 (103; 4) | – | low |
| MBN DDT | 80 (100; 4) | 100 (100; 4) | – | low | |
| KZN | 88 (75; 3) | 100 (76; 3) | – | low | |
| An. gambiae | TONGS | 91 (100; 4) | 100 (109; 4) | – | low |