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Table 4 Distribution of pks, cnf1 genes and β-hemolysis in E. coli isolates according to phylogenetic group

From: Cytotoxic Escherichia coli strains encoding colibactin and cytotoxic necrotizing factor (CNF) colonize laboratory macaques

Phylogenetic group

pks+

cnf1+

β-hemolytic

2014

2016

Total

2014

2016

Total

2014

2016

Total

A

0/36 (0.0%)

1/18 (5.6%)

1/54 (1.9%)

0/19 (0.0%)

0/24 (0.0%)

0/43 (0.0%)

0/16 (0.0%)

0/23 (0.0%)

0/39 (0.0%)

B1

1/36 (2.8%)

1/18 (5.6%)

2/54 (3.7%)

0/19 (0.0%)

1/24 (4.2%)

1/43 (2.3%)

0/16 (0.0%)

0/23 (0.0%)

0/39 (0.0%)

B2

33/36 (91.7%)

11/18 (61.1%)

44/54 (81.5%)

19/19 (100%)

23/24 (95.8%)

42/43 (97.7%)

16/16 (100%)

23/23 (100%)

39/39 (100%)

B21

2/36 (5.6%)

5/18 (27.8%)

7/54 (13.0%)

0/19 (0.0%)

0/24 (0.0%)

0/43 (0.0%)

0/16 (0.0%)

0/23 (0.0%)

0/39 (0.0%)

D

0/36 (0.0%)

0/18 (0.0%)

0/54 (0.0%)

0/19 (0.0%)

0/24 (0.0%)

0/43 (0.0%)

0/16 (0.0%)

0/23 (0.0%)

0/39 (0.0%)