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Table 1 Container index of Aedes mosquitoes encountered at different study setups in Gampaha District, Sri Lanka

From: Bionomic aspects of dengue vectors Aedes aegypti and Aedes albopictus at domestic settings in urban, suburban and rural areas in Gampaha District, Western Province of Sri Lanka

Breeding habitat types Container index
Aedes aegypti Aedes albopictus
Urban Suburban Rural Total Urban Suburban Rural Total
Water storage barrels 7.1 3.1 1.4 3.5 11.2 13.2 18.4 14.7
Water storage cement tanks 5.1 1.7 8.0 7.7 21.6 13.9
Water storage other 1.6 0.5 0.5 1.6 10.6 12.9 10.0
Concrete slab 2.9 14.6 5.4 20.0 4.2 15.4 12.8
Gutters 9.4 6.3 19.2 11.3
Tyres 14.0 8.8 6.6 14.0 31.6 31.7 27.9
Ornamentals 5.7 1.8 0.4 2.1 13.6 18.6 23.6 19.5
Natural 2.4 0.2 13.1 26.5 19 22.4
Ponds 25.0 12 6.5
Wells 2.9 3.3 1.0
Tube wells 5.0 3.9 16.8 11.1 18.5 16.8
AC/refrigerator 4.5 0.6 1.9 3.1 5.0 19 8.7
Temporary removals 6.8 0.5 0.6 2.5 8.6 20.1 19.9 16.5
Covering items/polythene 4.8 2.3 2.1 18.0 18.8 31.7 22.7
Discarded degradable 0.7 0.3 13.0 26.5 17.8 18.3
Discarded reusable items 9.8 0.4 1.9 14.1 25 14.5 19.3
Discarded non-reusable items 5.3 1.9 12.5 20.7 18.2 17.0
Pet feeding cups 2.6 1.1 4.5 11.3 17.0 9.1
Non-used cisterns/commode 14.3 5.9 6.0 14.3 40.8 32.1 36.8
OtherA 7.7 11.5 8.3 10.7
Total 4.2 (125/2948) 1.3 (51/4033) 0.2 (5/3051) 1.8 (181/10032) 9.5 (281/2948) 19.4 (785/4033) 20.0 (609/3051) 16.7 (1675/10038)
  1. Container index was calculated as number of positive containers for Aedes spp./total number of water-holding containers inspected × 100
  2. The bolded values indicate the highest CI observed for Aedes aegypti and Aedes albopictus at each environmental setup and overall CI for each species recorded from all environmental setup