Wong MC 2020.

Study characteristics
Study design	Mathematical modelling study
Disease	COVID‐19
Travel‐related control measure(s)	Quarantine of travellers Compulsory 14‐day quarantine at designated camps or at home of travellers crossing national borders Date of implementation: 30 January ‐  4 February 2020: 1st wave; 25 February ‐ 25 March 2020: 2nd wave
Country implementing the measure(s)	Country protected by the measure: China Country restricted by the measure: Italy, Japan, Europe, all countries
Outcome(s)	Shift in epidemic development  Outcome: cumulative cases in the community Follow‐up: 8 January  ‐ 25 February 2020: 1st wave; 26 February ‐ 24 April 2020: 2nd wave
Notes	COI: “None declared.” Funding: “The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not‐for‐profit sectors.”