Author: Cori, Anne; Donnelly, Christl A.; Dorigatti, Ilaria; Ferguson, Neil M.; Fraser, Christophe; Garske, Tini; Jombart, Thibaut; Nedjati-Gilani, Gemma; Nouvellet, Pierre; Riley, Steven; Van Kerkhove, Maria D.; Mills, Harriet L.; Blake, Isobel M.
Title: Key data for outbreak evaluation: building on the Ebola experience Document date: 2017_5_26
ID: 12t247bn_53
Snippet: However, air travel does not cover other population movements that may play an important role in disease spread, e.g. travel by road or on foot in Guinea, Liberia and Sierra Leone and across the porous country borders during the West African Ebola epidemic [97] . Usually, little data are available to directly characterize these typically smaller-scale movements. Gravity models, which assume that connectivity between two places depends on their po.....
Document: However, air travel does not cover other population movements that may play an important role in disease spread, e.g. travel by road or on foot in Guinea, Liberia and Sierra Leone and across the porous country borders during the West African Ebola epidemic [97] . Usually, little data are available to directly characterize these typically smaller-scale movements. Gravity models, which assume that connectivity between two places depends on their population sizes and the distance between them, can be used to quantify spatial connectivity between different regions [98] [99] [100] [101] , and have proved useful to predict local epidemic spread, e.g. for Chikungunya [98] . Such models require data on population sizes and geographical distances.
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