The effectiveness of backward contact tracing in networks.

@article{Kojaku2021TheEO,
  title={The effectiveness of backward contact tracing in networks.},
  author={Sadamori Kojaku and Laurent H'ebert-Dufresne and Enys Mones and Sune Lehmann and Yong-Yeol Ahn},
  journal={Nature physics},
  year={2021},
  volume={17},
  pages={
          652-658
        }
}
Effective control of an epidemic relies on the rapid discovery and isolation of infected individuals. Because many infectious diseases spread through interaction, contact tracing is widely used to facilitate case discovery and control. However, what determines the efficacy of contact tracing has not been fully understood. Here we reveal that, compared with 'forward' tracing (tracing to whom disease spreads), 'backward' tracing (tracing from whom disease spreads) is profoundly more effective… 
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