Monitoring of Insecticide Resistance in Anopheles culicifacies in Twelve Districts of Madhya Pradesh, Central India (2017–2019)
Table 5
Susceptibility status of An. culicifacies in the districts grouped under different categories based on IRS.
Villages with different insecticide sprays
Insecticide
No. of mosquitoes exposed
No. of mosquitoes dead
% mortality
Susceptibility status
Test
Control
Test
Control
Group A—pyrethroid IRS since last 5–10 years and earlier with DDT IRS-7 districts (Singrauli, Panna, Hoshangabad, Khargone, Dhar, Shivpuri, and Alirajpur)
DDT
970
445
157
5
16.2
CR
Malathion
970
445
671
7
69.2
CR
Alphacypermethrin
970
445
875
9
90.2
PR
Deltamethrin
970
445
923
9
95.2
PR
Group B—DDT spray since last 5–10 years—3 districts (Anuppur, Bhind, and Umaria)
DDT
315
105
49
1
15.6
CR
Malathion
315
105
215
1
68.3
CR
Alphacypermethrin
315
105
303
3
96.2
PR
Deltamethrin
315
105
306
3
97.1
PR
Group C—no spray since last >20 years—2 districts (Tikamgarh and Datia)
DDT
205
75
77
1
37.6
CR
Malathion
205
75
182
2
88.8
CR
Alphacypermethrin
205
75
202
2
98.5
S
Deltamethrin
205
75
205
2
100.0
S
CR = confirmed resistant, PR = possible resistant, and S = susceptible.
