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Change of the MSI and sub-MSI relative to disease outbreak in the study sites, 1 January to 30 May 2020. Data sources: ECDC (https://www.ecdc.europa.eu/en/COVID-19/situation-updates (accessed on 1 July 2020)), SSE at JHU (https://github.com/CSSEGISandData/COVID-19/blob/master/README.md (accessed on 1 July 2020)).
