Prediction of hospital-onset COVID-19 infections using dynamic networks of patient contact: an international retrospective cohort study.

The median number of contacts (degree) over networks across time was four in rooms (ie, the number of people sharing a room), 22 in wards (ie, the number of people sharing a ward), and 67 in buildings (ie, the number of people located in the same building at the same time), with an increasing trend over time ( appendix p 12 ).

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