Using GIS to develop cholera risk map for emergency preparedness in Greater Accra, Ghana

Authors: Hector N L Samani*, University of Nebraska - Omaha
Topics: Geography and Urban Health, Hazards, Risks, and Disasters, Africa
Keywords: Health,
Session Type: Poster
Day: 4/4/2019
Start / End Time: 3:05 PM / 4:45 PM
Room: Lincoln 2, Marriott, Exhibition Level
Presentation File: Download


Following a cholera outbreak in Ghana in 2016, Geographic Information Science (GIS) was used to create a cholera risk map for greater Accra Region. The map was intended to guide Ghana Red Cross Society (GRCS) to identify vulnerable areas/districts and develop a contingency plan for future responses within the greater Accra metropolis. All public facilities such as schools, churches, mosques, bus station, etc. were surveyed to access their sanitation and hygiene practices, which was used to develop an index and determine cholera risk levels. The risk levels were determined for each facility on a three-point weighted scale (high risk, medium risk and low risk) and mapped. An optimized hot spot analysis was conducted on facility risk levels to find spatial clusters of high risk and low risk facilities. The cluster scores were then interpolated using inverse distance weighting (IDW) method to create a rasterized map for better visual appearance and easy conceptualization. GRCS used the results which showed concentrations of district/cities that are more vulnerable to develop an Emergency Plan of Action (EPoA) for raising awareness in communities, surveillance, promoting good sanitation and hygienic practices, cholera preparedness and response in Greater Accra Metropolis.

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