Table 1.
Healthcare-associated COVID-19 clusters investigated by whole-genome sequencing.
| Epidemiological Investigation |
Whole-genome Sequencing |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Cluster | Hospital site | Unit | First case | Last case | HA-COVID-19 | CA-COVID-19 | HCW | Total | Sequenced (% among total cases) | Phylogenetically validated (% among total cases) |
| #1 | SAT | Infectious disease | 8-Sep-2020 | 21-Sep-2020 | 1 | 0 | 4 | 5 | 4 (80 %) | 2 (40 %) |
| #2 | SAT | Internal medicine | 10-Sep-2020 | 21-Sep-2020 | 1 | 0 | 5 | 6 | 3 (50 %) | 2 (33 %) |
| #3 | SAT | Hepato-gastroenterology Surgery Surgical intensive care |
15-Sep-2020 | 18-Nov-2020 | 9 | 2 | 19 | 30 | 25 (83 %) | 14 (47 %) split in 3 independent clusters |
| #4 | SAT | Orthopedic | 23-Sep-2020 | 24-Oct-2020 | 3 | 2 | 6 | 11 | 9 (81 %) | 6 (54 %) +1 from cluster #6 |
| #5 | SAT | Rheumatology | 26-Oct-2020 | 13-Nov-2020 | 5 | 7 | 1 | 13 | 7 (54 %) | 4 (31 %) +1 from cluster #3 |
| #6 | SAT | Geriatric | 20-Oct-2020 | 4-Nov-2020 | 4 | 1 | 2 | 7 | 6 (86 %) | 3 (43 %) +1 from cluster #3 |
| #7 | SAT | Psychiatric | 23-Nov-2020 | 2-Dec-2020 | 4 | 1 | 2 | 7 | 4 (57 %) | 4 (57 %) |
| #8 | PSL | Hepato-gastroenterology | 21-Oct-2020 | 27-Oct-2020 | 5 | 1 | 6 | 12 | 9 (75 %) | 6 (50 %) |
| #9 | PSL | Hemodialysis | 19-Nov-2020 | 8-Dec-2020 | 7 | 0 | 6 | 13 | 9 (69 %) | 6 (46 %) |
| #10 | PSL | Internal medicine | 22-Nov-2020 | 27-Nov-2020 | 3 | 0 | 7 | 10 | 8 (80 %) | 7 (70 %) |
| #11 | CFX | Geriatric | 12-Oct-2020 | 8-Dec-2020 | 16 | 1 | 10 | 27 | 18 (67 %) | 14 (52 %) |
| #12 | LRG | Pediatric after-care rehabilitation | 29-Sep-2020 | 19-Nov-2020 | 7 | 0 | 11 | 18 | 12 (67 %) | 8 (44 %) |
SAT: Saint-Antoine Hospital, PSL: Pitié-Salpêtrière Hospital, CFX: Charles Foix Hospital, LRG: La Roche-Guyon Hospital, HA-COVID-19: healthcare-associated COVID-19, CA-COVID-19: community-associated COVID-19, HCW: healthcare worker.