Taylor 2020.

Study characteristics
Study design	Mathematical modelling study Description: reduction of potentially infectious people by probabilistically stacking different measures Custom method developed in paper Applied to UK airports
Disease	COVID‐19
Travel‐related control measure(s)	Screening at national borders and quarantine of travellers  Entry screening procedures: thermal imaging scanner; health checks; single PCR testing (4 days after arrival);  double PCR testing (upon arrival and after 4 days); single PCR testing (7 days after arrival); double PCR testing (upon arrival and after 7 days) Quarantine procedures: quarantine for 7, 10, and 14 days Date of implementation: n.r.
Country implementing the measure(s)	Country protected by the measure: United Kingdom Country restricted by the measure: top‐25 countries flying commercially to the UK (making up 86% of international flights into UK airports)
Outcome(s)	Cases avoided due to the measure Outcome 1: proportion of infectious arrivals prevented from onward transmission Follow‐up: one week in August 2020 Cases detected due to the measure Outcome 2: proportion of detected infectious passengers Follow‐up: n.r.
Notes	COI: “None declared.” Funding: “Public Health England (PHE) commissioned and funded this work as well as providing data on worldwide cases, deaths and tests for COVID‐19. They did not have any role in the model design, analysis or preparation of the manuscript.”