Kwok 2020.

Study characteristics
Study design	Mathematical modelling study Description: SEIR Model with different localized patches with travel in‐between Covers Hong‐Kong dynamics with travel from China No specific changes in dynamical equations Temperature dependent R0 controls dynamics
Disease	COVID‐19
Travel‐related control measure(s)	Border closure Reduction in number of daily travellers from 200,000 to 0 Date of implementation: 8 February 2020
Country implementing the measure(s)	Country protected by the measure: Hong Kong, China Country restricted by the measure: China, excluding Hubei
Outcome(s)	Cases avoided due to the measure Outcome 1: Cumulative number of cases Outcome 2: number of deaths Follow‐up: 8 February ‐ 14, June 2020
Notes	COI: “No potential conflict of interest was reported by the authors.” Funding: “This research did not receive any specific grant from funding agencies in the public, commercial, or not‐for‐profit sectors.”