Characterization of /F1:A2:B20 Plasmids Harbored by Escherichia Coli Sequence Type 131 Sublineage C1/30R Isolates Spreading Among Elderly Japanese in Nonacute-Care Settings
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We characterized 29 -harboring plasmids of sequence type 131 (ST131) sublineage C1/30R isolates from healthy individuals and long-term-care facility (LTCF) residents. Most (27/29) plasmids were of the FIA, FIB, and FII multireplicon type with the same plasmid multilocus sequence typing (pMLST). Several plasmids (7/23) from LTCF residents harbored only as the resistance gene; however, their fundamental structures were very similar to those of previously isolated /F1:A2:B20 plasmids, suggesting their prevalence as a newly arising public health concern.
Plasmid-mediated acquisition and chromosomal integration of in a subclade of ST131-30 clade C1.
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