Table 4.
Main characteristics of the identified clusters.
| Cluster_ID | Num Seqs | ITa | EUb | CNc | Lineage | Clade | MLd median | CIe_low | CI_up | Type of cluster* |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 4 | 4 | 0 | 0 | B.1 | 20A | 20/01/2020 | 08/01/2020 | 24/01/2020 | IT |
| 6 | 11 | 2 | 8 | 1 | B.1 | 20A | 24/01/2020 | 10/01/2020 | 21/02/2020 | M |
| 22 | 3 | 3 | 0 | 0 | B.1 | 20A | 31/01/2020 | 11/01/2020 | 03/03/2020 | IT |
| 2 | 6 | 6 | 0 | 0 | B.1 | 20A | 01/02/2020 | 17/01/2020 | 10/02/2020 | IT |
| 8 | 3 | 3 | 0 | 0 | B.1.1 | 20B | 10/02/2020 | 28/01/2020 | 12/03/2020 | IT |
| 3 | 7 | 5 | 2 | 0 | B.1 | 20A | 13/02/2020 | 26/01/2020 | 22/02/2020 | M |
| 7 | 3 | 2 | 1 | 0 | B.1 | 20A | 17/02/2020 | 17/01/2020 | 01/03/2020 | M |
| 11 | 3 | 3 | 0 | 0 | B.1 | 20A | 20/02/2020 | 18/01/2020 | 11/03/2020 | IT |
| 10 | 4 | 2 | 2 | 0 | B.1.1 | 20B | 20/02/2020 | 31/01/2020 | 12/03/2020 | M |
| 9 | 5 | 3 | 2 | 0 | B.1 | 20A | 20/02/2020 | 26/01/2020 | 13/03/2020 | M |
| 12 | 6 | 1 | 5 | 0 | B.1.1 | 20B | 22/02/2020 | 06/02/2020 | 27/02/2020 | S |
| 13 | 3 | 3 | 0 | 0 | B.1 | 20A | 23/02/2020 | 22/01/2020 | 24/03/2020 | IT |
| 5 | 11 | 11 | 0 | 0 | B | 19A | 24/02/2020 | 14/02/2020 | 24/02/2020 | IT |
| 4 | 3 | 1 | 0 | 0 | B | 19A | 24/02/2020 | 28/01/2020 | 28/02/2020 | S |
| 14 | 3 | 3 | 0 | 0 | B.1 | 20A | 01/03/2020 | 29/01/2020 | 01/03/2020 | IT |
| 15 | 11 | 3 | 8 | 0 | B.1.1.1 | 20D | 02/03/2020 | 22/02/2020 | 02/03/2020 | M |
| 17 | 5 | 1 | 4 | 0 | B.1.1.1 | 20D | 02/03/2020 | 22/02/2020 | 02/03/2020 | S |
| 16 | 8 | 8 | 0 | 0 | B.1.1.1 | 20D | 02/03/2020 | 22/02/2020 | 02/03/2020 | IT |
| 19 | 4 | 4 | 0 | 0 | B.1 | 20C | 08/03/2020 | 07/02/2020 | 11/03/2020 | IT |
| 18 | 3 | 3 | 0 | 0 | B.1.1 | 20B | 08/03/2020 | 06/02/2020 | 17/03/2020 | IT |
| 20 | 5 | 5 | 0 | 0 | B.1.1 | 20B | 18/03/2020 | 24/02/2020 | 24/03/2020 | IT |
| 21 | 4 | 4 | 0 | 0 | B.1 | 20A | 31/03/2020 | 05/03/2020 | 15/04/2020 | IT |
aItalian strains.
bEuropean strains, with the exception of Italy.
cChinese strains.
dMaximum likelihood.
eConfidence Interval.
*Type of cluster: M, mixed; IT, Italian; S, single Italian isolate.