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The aim of this study is to investigate the trend of antimicrobial resistance of 696 Escherichia coli strains of chicken origin in China during 1970–2007, and to characterize the beta-lactamase determinants of these strains. Minimum inhibitory concentrations (MICs) of these strains against 11 antimicrobials were determined by the broth microdilution method. Quinolone-resistant, and first-generation...
A total of 182 Escherichia coli isolates from animals, environment and workers of dairy cattle, swine and chicken farms in Shandong which locates in Eastern China, were investigated for antimicrobial resistance as well as prevalence and the transfer mechanisms of integrons. The results revealed isolates from swine and chicken farm exhibited high levels of resistance to antimicrobial agents. The positive...
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