Fig 1.
Picture of a Gravitrap with mosquitoes trapped on the sticky lining.
Fig 2.
Temporal trend of the weekly Gravitrap aegypti Index (GAI) from 2014 to 2016 (A). Trend (B) and seasonal (C) decomposition of the GAI in Singapore.
Fig 3.
The mean Ae. aegypti caught per trap by aggregated floor (Low, Mid and High), and its 95% confidence intervals.
Fig 4.
Distribution of the weekly GAI from January 2014 to September 2016 in each treatment site, arranged in descending median GAI.
Fig 5.
Relationship between GAI and BP assessed by Pearson’s correlation test.
Fig 6.
Weekly GAI and dengue cases (2014–2016).
Fig 7.
Mean number of dengue cases per week and its 95% confidence interval for each risk group (Low, Moderate and High GAI).
Fig 8.
Map showing the spatial distribution of control (red) and treatment (green) sites. The grey borders indicate the residential areas in Singapore. The figure was created using R software with base layer obtained from https://www.onemap.sg/main/v2/.
Fig 9.
Monthly case ratios in control (red) and treatment (green) sites, before (2010–2012) and during (2014–2016) Gravitrap deployment.
Table 1.
Output of linear mixed model with Site and Period as categorical variable and product of Site and Period (interaction term) entered to the model.
Outcome is the monthly case ratios.