Table 1.

Clades and clusters, lineage assignment, number of SARS-CoV-2 genomes, and regions/autonomous provinces referred to in the maximum likelihood tree reported in Figure 1.

Clade	Cluster	Lineage	Total	Region and Number
main	a	B.1	6	Umbria (1), Lazio (4), Abruzzo (1)
main	b	B.1	2	Campania (1), Lombardy (1)
sub-clade	c	B.1	6	Veneto (1), Molise (1), Abruzzo (2), Lazio (1), Lombardy (1)
sub-clade	d	B.1	3	Lombardy (1), Lazio (1), Tuscany (1)
sub-clade	e	B.1	4	Sicily (2), Friuli-Venezia Giulia (2)
sub-clade	f	B.1	2	Marche (1), Lombardy (1)
sub-clade	g	B.1	2	Campania (1), Apulia (1)
sub-clade	h	B.1	5	Piedmont (1), Molise (1), Lombardy (1), Campania (1), Lazio (1)
sub-clade	i	B.1	2	Lazio (2)
sub-clade	l	B.1.1 (39), B.1.1.323 (1)	42	Abruzzo (16), Tuscany (2), Veneto (2), AP of Bolzano (1)
				Lazio (3), Campania (2), Calabria (1), Lombardy (3), Sardinia (3), Valle d’Aosta (3), Umbria (1), Sicily (1), Basilicata (2)
		B.1.1.61 (1)		Friuli-Venezia Giulia (1), Molise (1).
		B.1.1.70 (1)