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Using high-resolution contact networks to evaluate SARS-CoV-2 transmission and control in large-scale multi-day events

Author

Listed:
  • Rachael Pung

    (Ministry of Health
    London School of Hygiene and Tropical Medicine
    London School of Hygiene and Tropical Medicine)

  • Josh A. Firth

    (University of Oxford
    University of Oxford)

  • Lewis G. Spurgin

    (University of East Anglia)

  • Vernon J. Lee

    (Ministry of Health
    National University of Singapore)

  • Adam J. Kucharski

    (London School of Hygiene and Tropical Medicine
    London School of Hygiene and Tropical Medicine)

Abstract

The emergence of highly transmissible SARS-CoV-2 variants has created a need to reassess the risk posed by increasing social contacts as countries resume pre-pandemic activities, particularly in the context of resuming large-scale events over multiple days. To examine how social contacts formed in different activity settings influences interventions required to control Delta variant outbreaks, we collected high-resolution data on contacts among passengers and crew on cruise ships and combined the data with network transmission models. We found passengers had a median of 20 (IQR 10–36) unique close contacts per day, and over 60% of their contact episodes were made in dining or sports areas where mask wearing is typically limited. In simulated outbreaks, we found that vaccination coverage and rapid antigen tests had a larger effect than mask mandates alone, indicating the importance of combined interventions against Delta to reduce event risk in the vaccine era.

Suggested Citation

  • Rachael Pung & Josh A. Firth & Lewis G. Spurgin & Vernon J. Lee & Adam J. Kucharski, 2022. "Using high-resolution contact networks to evaluate SARS-CoV-2 transmission and control in large-scale multi-day events," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29522-y
    DOI: 10.1038/s41467-022-29522-y
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    References listed on IDEAS

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    1. Ciro Cattuto & Wouter Van den Broeck & Alain Barrat & Vittoria Colizza & Jean-François Pinton & Alessandro Vespignani, 2010. "Dynamics of Person-to-Person Interactions from Distributed RFID Sensor Networks," PLOS ONE, Public Library of Science, vol. 5(7), pages 1-9, July.
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