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. 2021 Mar 25;8:94. doi: 10.1038/s41597-021-00878-y

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© The Author(s) 2021

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Fig. 10 — Elapsed time (in days) between the introduction of NPIs and recording of first death (red) or 50 cases (blue) in countries that implemented travel-related vs community-related NPIs first. A negative value implies that the first travel or community NPI was imposed prior to the first death (or 50 confirmed cases) while a positive value means that the NPI was imposed after such an event. For example, Israel, Germany and France imposed a travel related NPI over a month before reaching 50 confirmed cases or first death, while in USA-NY such NPI was imposed only 10 days after the first death. In most countries the first NPI was imposed before reaching 50 confirmed cases and before the first death occurred.