Journal of Mosquito Research 2015, Vol.5, No.17, 1-10
6
Table 3 Summary of distribution of observed breeding sites for
Aedes
larvae and dengue cases in Nainital and Dehradun
Type of Container
Nainital
Dehradun
Total
Tires
95%
20%
54%
Coolers
18%
27%
21%
Tin containers
51%
0%
51%
Cement tanks
44%
23%
31%
Clay pots
30%
19%
23%
Plastic containers
41%
25%
31%
Fridge vessels
0%
43%
43%
Total
41%
23%
30%
No of Dengue Cases
862
2913
3775
% cases
23%
77%
100%
Collection of all the data points (breeding sites) are independent in nature and do not feature the dependency over dengue cases or
deaths in the study area.
Table 4 Percentage distribution of positive container and influence of types of containers for breeding of
Aedes
mosquitoes at
different localities surveyed in Nainital
Areas/ Localities
Case (%)=23%
Chances to be getting
Aedes
Larvae/pupae in different types of containers
Tires
Coolers
Tin containers Cement tanks
Clay pots
Plastic containers
Fridge Total
Forest compound 0%
18%
0%
0%
100%
25%
0%
60%
Kotdwar Rd.
50%
33%
40%
33%
13%
0%
0%
24%
Khatyari
80%
30%
100%
91%
86%
90%
0%
87%
Gular Ghati
100%
0%
100%
0%
100%
100%
0%
100%
Perumdara
0%
20%
17%
0%
20%
0%
0%
12%
25 acers Colony
0%
20%
0%
38%
11%
11%
0%
14%
CCPM colony
0%
14%
11%
0%
24%
37%
0%
24%
Nageena Colony
0%
8%
10%
0%
8%
0%
0%
8%
bangali colony
0%
0%
33%
13%
3%
7%
0%
9%
Bindukhatta
0%
0%
0%
0%
14%
7%
0%
10%
Indiranagar
0%
0%
0%
8%
9%
7%
0%
8%
Nainital Total
95%
18%
51%
44%
30%
41%
0%
41%
Variance = 10% , 3 Sigma limit = 70%
Table indicates high-risk containers in terms of
Aedes
breeding; Digits in bold font highlight the highest percentage of containers
found positive for
Aedes breeding
in a given localities.
We observed a very high correlation between overall
HI and BI values (r ≥ 0.92, p<0.01). In most positive
houses, more than one container with
Aedes
larvae/pupae was found.
Discussion
Dengue has been on the rise since the year 2010 with
epidemics reported in as many as 50 countries in 2010
(WHO-South East Asian Regional Office 2010). In
this article, we analyzed the dengue transmission
dynamics in Uttarakhand in the last few years,
investigating the dengue/DHF epidemic in 2010 and
exploring how different types of containers act on the
mosquito proliferation and how all this knowledge
may help in establishing better policies to control the
dengue epidemics. Apparently, the effective vector
control may be possible but not easy. In many
developing countries limited infrastructural facilities
in programs to control the
Aedes
mosquitoes has
