Since the nationwide lockdown was imposed on March 22, 2020, in The Gambia during the COVID-19 pandemic, mobile phone records were used to track the weekly mobility. The map shows the change of the population flows from March to May, and the blue shades indicate the outflow of people, and the green shades indicate the inflow of people. Data were gathered using call detail records.
Main Source: Knippenberg, Erwin, and Moritz Meyer. 2020. “The Hidden Potential of Mobile Phone Data: Insights on COVID-19 in the Gambia.” Data Blog (blog). September 10, 2020.