Abstract:
:Global expansion of antimicrobial drug-resistant Escherichia coli sequence type (ST) 131 is unrivaled among human bacteria. Understanding trends among ST131 clades will help with designing prevention strategies. We screened E. coli from blood samples (n = 1,784) obtained in Calgary, Alberta, Canada, during 2006, 2012, and 2016 by PCR for ST131 and positive samples (n = 344) underwent whole-genome sequencing. The incidence rate per 100,000 residents increased from 4.91 during 2006 to 12.35 during 2012 and 10.12 during 2016. ST131 belonged to clades A (10%), B (9%), and C (81%). Clades C1-nonM27 and B were common during 2006, and C2 containing blaCTX-M-15, C1-M27 containing blaCTX-M-27, and A were responsible for the increase of ST131 during 2012 and 2016. C2 was the most antimicrobial drug-resistant subclade and increased exponentially over time. Eradicating ST131, more specifically the C2 subclade, will lead to considerable public health benefits for persons in Calgary.
journal_name
Emerg Infect Disjournal_title
Emerging infectious diseasesauthors
Peirano G,Lynch T,Matsumara Y,Nobrega D,Finn TJ,DeVinney R,Pitout JDDdoi
10.3201/eid2612.201221subject
Has Abstractpub_date
2020-12-01 00:00:00pages
2907-2915issue
12eissn
1080-6040issn
1080-6059journal_volume
26pub_type
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