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. 2021 Sep 29;8:253. doi: 10.1038/s41597-021-01031-5

Online-only Table 1.

Data dictionary of International Movement Restrictions introduced in response to COVID-19.

Policy Type Description Policy Sub-type Description Policy Amount (to date) (n = 1,305)
1. Complete Closure a new policy in which all newcomers are banned with limited exceptions 1.1 Essentials-only Exception a complete closure with exceptions for essentials but not for citizens n = 38
1.2 a complete closure with exceptions for essentials and for citizens (including citizens, permanent residents, and/or the family members of citizens and permanent residents) n = 182
Citizenship exception
1.3 a complete closure with exceptions for essentials and for nationals from a specific country or listed set of countries (up to 10) n = 61
Country(ies) exception
1.4 A complete closure with exceptions for specific work permit status holders n = 89
Workers exception
2 a new policy which restricts access of specific groups of people 2.1 A partial closure which bans the application for new visas, whether all visa seekers or impacting those from specified countries n = 63
Partial Closure Visa Ban
2.2 A partial closure which bans foreign nationals from one country or group of countries, e.g. “entry to the country is denied to foreign nationals from Austria, Belgium, and France” n = 99
Citizenship Ban
2.2 and 2.3 Both 2.2 and 2.3 n = 15
2.3 A partial closure which bans travelers who, regardless of nationality, have recently travelled through or from a specified country or group of countries, e.g. for “All travelers who have been to or travelled through China, Hong Kong, Iran, Italy, and Japan are advised to not enter the country, and may be denied entry” n = 150
Travel History Ban
2.4 Refugee Ban A partial closure which uses language targeting “refugees” or “asylum seekers”. n = 3
2.5 A partial closure which impacts those entering through a specified land, sea or air border; OR all land borders closed OR all air borders closed OR all sea borders closed (but not all three) n = 612
Border Closure
3. No Policy Implemented A thorough search reveals no national level policies implemented that meet the criteria for a complete or partial closure. n = 8