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Epidemic contact tracing via communication traces.
Katayoun Farrahi1, Rémi Emonet2, Manuel Cebrian3
1Department of Computing, Goldsmiths, University of London, London, United Kingdom.
Plos One
|May 3, 2014
Summary
Contact tracing using mobile phone communication data can help control epidemics by reducing peak incidence. Effectiveness depends on network overlap, especially early in an outbreak.
Area of Science:
- Epidemiology
- Network Science
- Public Health
Background:
- Traditional contact tracing relies on physical interaction networks, which are difficult to reconstruct due to privacy and data issues.
- Mobile phone communication traces can serve as proxies for physical interactions, offering a potential tool for contact tracing.
- Understanding the interplay between physical and communication networks is crucial for effective disease spread mitigation.
Purpose of the Study:
- To propose and evaluate a dual network model for contact tracing using communication data as a proxy for physical interactions.
- To assess the impact of various contact tracing strategies on epidemic size and peak incidence.
- To investigate the influence of network overlap on the efficiency of communication-based contact tracing.
Main Methods:
- Development of a dual model simulating disease spread in a physical network and tracing in a communication network.
- Application of the model to a dataset of 72 students over 9 months, including physical interactions and mobile communication.
- Analysis of contact tracing strategy effectiveness based on epidemic size, peak incidence, and network characteristics.
Main Results:
- Contact tracing strategies, particularly those leveraging communication networks, can significantly reduce epidemic size and peak incidence.
- The efficiency of communication-based contact tracing diminishes as the epidemic progresses, especially with low overlap between physical and communication networks.
- Early intervention using mobile communication traces is more effective, with costs increasing as the outbreak evolves.
Conclusions:
- Contact tracing via mobile phone communication traces is a viable strategy for controlling contagious outbreaks.
- The overlap between face-to-face and communication networks is a critical factor determining the sustained effectiveness of this tracing method.
- Optimizing contact tracing strategies requires considering both network properties and the temporal dynamics of disease spread.
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