Escherichia coli Producing CTX-M-2 β-Lactamase in Cattle, Japan

Yutaka Shiraki, Naohiro Shibata, Yohei Doi, Yoshichika Arakawa

Research output: Contribution to journalArticle

101 Citations (Scopus)

Abstract

From November 2000 to June 2001, Escherichia coli strains producing CTX-M-2 β-lactamase were isolated from 6 (1.5%) of 396 cattle fecal samples and 2 (0.7%) of 270 surface swabs of cattle carcasses in Japan. The blaCTX-M-2 gene responsible for CTX-M-2 production was encoded on transferable plasmids, and the gene was transferred to E. coli CSH2 with a very high frequency (2 × 10-4 to 6 × 10-1 per donor cells) by conjugation. Random amplified polymorphic DNA analysis of nine isolates showed at least five different patterns. These findings suggest that CTX-M-2 producers might have originated from cattle through the use of cephalosporins such as ceftiofur and that cattle could be a reservoir of CTX-M-2-producing E. coli. Continuous and strategic surveillance of antimicrobial-resistant bacteria in livestock is essential to suppress further dissemination of these bacteria into society at large.

Original languageEnglish
Pages (from-to)69-75
Number of pages7
JournalEmerging Infectious Diseases
Volume10
Issue number1
DOIs
Publication statusPublished - 01-2004

All Science Journal Classification (ASJC) codes

  • Epidemiology
  • Microbiology (medical)
  • Infectious Diseases

Fingerprint Dive into the research topics of 'Escherichia coli Producing CTX-M-2 β-Lactamase in Cattle, Japan'. Together they form a unique fingerprint.

  • Cite this