TABLE 2.
Summary of the outbreak in each ward with SARS-CoV-2 lineage descriptions
| Ward | Outbreak start (mo, day, yr) | Outbreak end (mo, day, yr) | Source of outbreak | Total no. of COVID-19-positive patients | No. of SARS-CoV-2-sequenced samples assigned to a lineage | SARS-CoV-2 lineage(s) |
|---|---|---|---|---|---|---|
| A (medicine) | Dec. 3, 2020 | Jan. 5, 2021 | Patient exposed to a COVID-19-positive HCW | 23 | 9 | B.1.564.1 (n = 9/9) |
| B (cardiology and medicine) | Dec. 4, 2020 | Dec. 18, 2020 | Three patients with exposure to the same COVID-19-positive HCW from ward A | 3 | 3 | B.1.564.1 (n = 3/3) |
| C (alternate level of care, mostly medicine) | Dec. 6, 2020 | Jan. 12, 2021 | Four patients exposed to two COVID-19-positive patients in ward A during their infectious period | 19 | 11 | B.1.564.1 (n = 9/11), B.1 (n = 1/11), B.1.1.32 (n = 1/11) |
| D (surgery) | Dec. 11, 2020 | Jan. 1, 2021 | Began with two cases, one of them with no direct epidemiological link to the other outbreak cases | 9 | 7 | B.1.564.1 (n = 6/7), B.1 (n = 1/7) |
| E (rehabilitation) | Dec. 11, 2020 | Jan. 4, 2021 | All patients exposed to a positive HCW | 4 | 3 | B.1.564.1 (n = 2/3), B.1.1.231 (n = 1/3) |