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