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Tree layout on global mobility network
showing the effective distance from the outbreak location to other uninfected locations during the COVID-19 pandemic. source paper 
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Global risk of infection and travel restrictions
Examines countries’ closeness regarding disease spreading and evaluates the effectiveness of travel restrictions in delaying infections during COVID-19 pandemic. source paper 
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Feedback system for SIRD model
Disease dynamics is a feedback control system with the NPIs and vaccination as the controllers to adjust dynamical processes. source paper
Global supply chain network
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Cartogram map
MSA’s average effective reproductive ratio of COVID-19 spread. source paper
Community network
Social networks consisted of two populations source paper
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Multi-layer social network
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