Thirteen fluoroquinolone-resistant Escherichia coli (FQREC) isolates from hospitalized patients in the Netherlands were found to represent predominantly (low-virulence) phylogenetic groups A and B1 and to lack extraintestinal virulence traits. These FQREC resemble animal-source E. coli and presumably pose little threat to noncompromised hosts. Similar analysis of other FQREC is needed.
Bibliographical noteFunding Information:
Financial support: Office of Research and Development, Medical Research Service, Department of Veterans Affairs; National Institutes of Health (grant DK-47504 to J.R.J); National Research Initiative Competitive Grants Program/US Department of Agriculture (grant 00-35212-9408 to J.R.J.).