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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Satellite imagery technology in public health: Analysis of site catchment areas for assessment of poliovirus circulation in Nigeria and Niger
Geospatial Health, Volume 11, No. 3, Article 462, Year 2016
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Description
Environmental surveillance supplements the surveillance of acute flaccid paralysis by monitoring wastewater for poliovirus circulation. Building on previous work,we analysed wastewater flow to optimise selection and placement of sampling sites with higher digital surface model (DSM) resolution. The newly developed 5-m mesh DSM from the panchromatic,remote-sensing instruments for stereo mapping on-board the Japanese advanced land observing satellite was used to estimate catchment areas and flow of sewage water based on terrain topography. Optimal sampling sites for environmental surveillance were identified to maximise sensitivity to poliovirus circulation. Population data were overlaid to prioritise selection of catchment areas with dense populations. The results for Kano City,Nigeria were compared with an analysis based on existing 30-and 90-m mesh digital elevation model (DEM). Analysis based on 5-m mesh DSM was also conducted for three cities in Niger to prioritise the selection of new sites. The analysis demonstrated the feasibility of using DSMs to estimate catchment areas and population size for programme planning and outbreak response with respect to polio. Alternative sampling points in Kano City that would cover a greater population size have been identified and potential sampling sites in Niger are proposed. Comparison with lower-resolution DEMs suggests that the use of a 5-m mesh DSMs would be useful where the terrain is flat or includes small-scale topographic changes not captured by 30-m data searches. © M. Takane et al.,2016.
Authors & Co-Authors
Takane, Marina
Switzerland, Geneva
Organisation Mondiale de la Santé
Okayasu, Hiromasa
Switzerland, Geneva
Organisation Mondiale de la Santé
Diop, Ousmane Madiagne
Switzerland, Geneva
Organisation Mondiale de la Santé
Statistics
Citations: 3
Authors: 3
Affiliations: 3
Identifiers
Doi:
10.4081/gh.2016.462
ISSN:
18271987
Research Areas
Environmental
Study Design
Cross Sectional Study
Study Locations
Niger
Nigeria