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

Pung, Rachael, Firth, Josh A., Spurgin, Lewis G., , Singapore CruiseSafe working group, , CMMID COVID-19 working group, Lee, Vernon J. and Kucharski, Adam J. (2022) Using high-resolution contact networks to evaluate SARS-CoV-2 transmission and control in large-scale multi-day events. Nature Communications, 13. ISSN 2041-1723

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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.

Item Type: Article
Uncontrolled Keywords: physics and astronomy(all),chemistry(all),biochemistry, genetics and molecular biology(all),sdg 3 - good health and well-being ,/dk/atira/pure/subjectarea/asjc/3100
Faculty \ School: Faculty of Science > School of Biological Sciences
Faculty of Science > School of Computing Sciences
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 06 May 2022 03:58
Last Modified: 10 May 2022 08:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/84895
DOI: 10.1038/s41467-022-29522-y

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