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. 2022 Jul 22;263:127133. doi: 10.1016/j.micres.2022.127133

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.