4.1. ASSESSMENT OF EFFECTIVENESS OF LARVICIDAL IN SMALL SCALE TRIAL...
3.4.1. Assessment of effectiveness of larvicidal in small scale trial The trial was conducted in Dien Phu commune - sumilarv 2MR intervention commune at 100 selected houses and in Dien Dien commune - control commune with 100 non-insecticide intervention houses monitored for parasitic ratios. similar to the experimental commune, Dien Phu. The two larvae indicators including Breteau, the index of the percentage of houses with the larvae and the index of the percentage of the IUDs with the larvae were monitored before and after the simultaneous intervention in both communes. Monitoring results of Breteau larvae Ae.aegypti index in 2 intervention and control communes are shown in the figure below:
Chỉ số Breteau
91
85
100
90
80
68
70
60
50
40
30
Can thiệp hóa chất
20
23
10
0
Trước can thiệp Sau 14 ngày
Sau30 ngày
Sau 60 ngày
Sau 90 ngày
Thời điểm đánh giá
Xã Can thiệp
Xã đối chứng
Figure 8. Comparison of Breteau index in sumilarv 2MR intervention commune with a control commune Figure 8 shows that sumilarv 2MR reduces Breteau Ae.aegypti larvae index in experimental commune compared to control commune. Before the intervention time, the Breteau index of Ae.aegypti larvae in the intervention commune was 80 and the control commune was 91. After 30 days of intervention, the Breteau index at the intervention commune decreased 23 compared to the index. The control commune Breteau was