Table 2 Entomological inoculation rate (EIR) of vector mosquitoes recorded during IRS period (2016) compared to the period following IRS withdrawal (2018)
Districts | Year | Parameters | January | February | March | April | May | June | July | August | September | October | November | December | Average | P value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Toukountouna | 2016 | N human catch | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 192 | <0.001 |
Total mosquitoes | 2 | 3 | 6 | 10 | 9 | 11 | 17 | 12 | 18 | 17 | 15 | 3 | 123 | |||
Thorax+ | 0 | 0 | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 9 | |||
IS | 0.000 | 0.000 | 0.333 | 0.200 | 0.111 | 0.000 | 0.059 | 0.083 | 0.056 | 0.059 | 0.000 | 0.000 | 0.073 | |||
HBR/night | 0.125 | 0.188 | 0.375 | 0.625 | 0.563 | 0.688 | 1.063 | 0.750 | 1.125 | 1.063 | 0.938 | 0.188 | 0.641 | |||
ElRJnight | 0.000 | 0.000 | 0.125 | 0.125 | 0.063 | 0.000 | 0.063 | 0.063 | 0.063 | 0.063 | 0.000 | 0.000 | 0.047 | |||
2018 | N human catch | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 192 | ||
Total mosquitoes | 4 | 3 | 4 | 3 | 13 | 74 | 93 | 61 | 54 | 44 | 34 | 19 | 406 | |||
Thorax+ | 1 | 0 | 1 | 0 | 2 | 2 | 5 | 8 | 14 | 12 | 4 | 1 | 50 | |||
IS | 0.250 | 0.000 | 0.250 | 0.000 | 0.154 | 0.027 | 0.054 | 0.131 | 0.259 | 0.273 | 0.118 | 0.053 | 0.123 | |||
HBR/night | 0.250 | 0.188 | 0.250 | 0.188 | 0.813 | 4.625 | 5.813 | 3.813 | 3.375 | 2.750 | 2.125 | 1.188 | 2.115 | |||
EIR/night | 0.063 | 0.000 | 0.063 | 0.000 | 0.125 | 0.125 | 0.313 | 0.500 | 0.875 | 0.750 | 0.250 | 0.063 | 0.260 | |||
Natitingou | 2016 | N human catch | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 192 | <0.001 |
Total mosquitoes | 4 | 2 | 10 | 15 | 10 | 16 | 16 | 16 | 21 | 15 | 13 | 2 | 140 | |||
Thorax+ | 0 | 0 | 2 | 3 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 9 | |||
IS | 0.000 | 0.000 | 0.200 | 0.200 | 0.100 | 0.000 | 0.063 | 0.000 | 0.048 | 0.067 | 0.000 | 0.000 | 0.064 | |||
HBR/night | 0.250 | 0.125 | 0.625 | 0.938 | 0.625 | 1.000 | 1.000 | 1.000 | 1.313 | 0.938 | 0.813 | 0.125 | 0.729 | |||
ElR/night | 0.000 | 0.000 | 0.125 | 0.188 | 0.063 | 0.000 | 0.063 | 0.000 | 0.063 | 0.063 | 0.000 | 0.000 | 0.047 | |||
2018 | N human catch | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 192 | ||
Total mosquitoes | 3 | 2 | 4 | 3 | 14 | 56 | 83 | 37 | 41 | 49 | 17 | 6 | 315 | |||
Thorax+ | 0 | 0 | 1 | 0 | 1 | 9 | 10 | 5 | 26 | 14 | 2 | 0 | 68 | |||
IS | 0.000 | 0.000 | 0.250 | 0.000 | 0.071 | 0.161 | 0.120 | 0.135 | 0.634 | 0.286 | 0.118 | 0.000 | 0.216 | |||
HBR/night | 0.188 | 0.125 | 0.250 | 0.188 | 0.875 | 3.500 | 5.188 | 2.313 | 2.563 | 3.063 | 1.063 | 0.375 | 1.641 | |||
ElR/night | 0.000 | 0.000 | 0.063 | 0.000 | 0.063 | 0.563 | 0.625 | 0.313 | 1.625 | 0.875 | 0.125 | 0.000 | 0.354 | |||
Kouande | 2016 | N human catch | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 192 | <0.001 |
Total mosquitoes | 6 | 3 | 8 | 15 | 11 | 8 | 11 | 16 | 20 | 13 | 18 | 1 | 130 | |||
Thorax+ | 1 | 0 | 2 | 4 | 1 | 0 | 0 | 2 | 1 | 1 | 1 | 0 | 13 | |||
IS | 0.167 | 0.00 | 0.250 | 0.267 | 0.091 | 0.000 | 0.000 | 0.125 | 0.050 | 0.077 | 0.056 | 0.000 | 0.100 | |||
HBR/night | 0.375 | 0.188 | 0.500 | 0.938 | 0.688 | 0.500 | 0.688 | 1.000 | 1.250 | 0.813 | 1.125 | 0.063 | 0.677 | |||
ElR/night | 0.063 | 0.000 | 0.125 | 0.250 | 0.063 | 0.000 | 0.000 | 0.125 | 0.063 | 0.063 | 0.063 | 0.000 | 0.068 | |||
2018 | N human catch | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | ||
Total mosquitoes | 5 | 6 | 5 | 12 | 19 | 74 | 93 | 61 | 54 | 44 | 34 | 19 | 426 | |||
Thorax+ | 1 | 1 | 0 | 1 | 4 | 2 | 5 | 6 | 14 | 12 | 4 | 1 | 51 | |||
IS | 0.20 | 0.17 | 0.00 | 0.08 | 0.21 | 0.03 | 0.05 | 0.10 | 0.26 | 0.27 | 0.12 | 0.05 | 0.12 | |||
HBR/night | 0.31 | 0.38 | 0.31 | 0.75 | 1.19 | 4.63 | 5.81 | 3.38 | 3.38 | 2.75 | 2.13 | 1.19 | 2.22 | |||
ElR/night | 0.06 | 0.06 | 0.00 | 0.06 | 0.25 | 0.13 | 0.31 | 0.88 | 0.88 | 0.75 | 0.25 | 0.06 | 0.27 |