Differences in Extended-Spectrum Beta-Lactamase Producing Escherichia coli Virulence Factor Genes in the Baltic Sea Region

Table 4

Phylogenetic distribution of 423 extraintestinal ESBL producing E. coli strains isolated from different countries.

Phylogenetic group	Number of isolates (% of total)
	Estonia^a ()	Latvia^b ()	Lithuania^c ()	Russia^d ()
A	11 (7)	3 (3)	3 (9)	9 (7)	—
B1	3 (2)	2 (2)	1 (3)	11 (9)	<0
B2	121 (81)	100 (89)	22 (63)	57 (45)	; <0
D	14 (9)	7 (6)	9 (26)	50 (39)	; ≤0

Indicate strains isolated from different countries.