Alliance for Pandemic Preparedness

September 18, 2020

Clustering and Superspreading Potential of SARS-CoV-2 Infections in Hong Kong

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  • Contact tracing data (n=1,038) was used to identify 4 to 7 superspreading events across 51 SARS-CoV-2 clusters in Hong Kong between January and April 2020.
  • An estimated 19% of cases seeded 80% of all local transmission. While transmissions between household contacts were observed most frequently, transmissions that occurred in social settings were associated with more secondary cases.

    Adam et al. (Sept 17, 2020). Clustering and Superspreading Potential of SARS-CoV-2 Infections in Hong Kong. Nature Medicine. https://doi.org/10.1038/s41591-020-1092-0