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U.S. Department of Health and Human Services

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TITLE:  Antimicrobial Resistance of Campylobacter Isolates from Retail Meat in the United States between 2002 and 2007
AUTHORS:  Zhao S;Young SR;Tong E;Abbott JW;Womack N;Friedman SL;McDermott PF;
YEAR:  2010
JOURNAL ABBREV:  Appl Environ Microbiol
JOURNAL FULL:  Applied and environmental microbiology
ISSUE:  24
END PAGE:  7956
KEYWORDS:  antimicrobial;ANTIMICROBIAL RESISTANCE;Antimicrobials;Campylobacter;Campylobacter coli;Campylobacter jejuni;Ciprofloxacin;Clindamycin;COLI;EMERGENCE;Erythromycin;FIELD GEL-ELECTROPHORESIS;FLUOROQUINOLONE;Food;GENTAMICIN;GROUND-BEEF;JEJUNI INFECTIONS;MACROLIDE RESISTANCE;Meat;microbiology;Nalidixic Acid;Poultry;Prevalence;Public Health;QUINOLONE;retail meat;Salmonella;SURVEILLANCE;SUSCEPTIBILITY;SYSTEM;United States;UNITED-STATES;
ABSTRACT:  The emergence of antimicrobial resistance in Campylobacter spp. has been a growing public health concern globally. The objectives of this study were to determine the prevalence, antimicrobial susceptibility, and genetic relatedness of Campylobacter spp. recovered by the National Antimicrobial Resistance Monitoring System (NARMS) retail meat program. Retail meat samples (n = 24,566) from 10 U.S. states collected between 2002 and 2007, consisting of 6,138 chicken breast, 6,109 ground turkey, 6,171 ground beef, and 6,148 pork chop samples, were analyzed. A total of 2,258 Campylobacter jejuni, 925 Campylobacter coli, and 7 Campylobacter lari isolates were identified. Chicken breast samples showed the highest contamination rate (49.9%), followed by ground turkey (1.6%), whereas both pork chops and ground beef had <0.5% contamination. The most common resistance was to doxycycline/tetracycline (46.6%), followed by nalidixic acid (18.5%), ciprofloxacin (17.4%), azithromycin and erythromycin (2.8%), telithromycin (2.4%), clindamycin (2.2%), and gentamicin (<0.1%). In a subset of isolates tested, no resistance to meropenem and florfenicol was seen. C. coli isolates showed higher resistance rates to antimicrobials, with the exception of doxycycline/tetracycline, than those seen for C. jejuni. Pulsed-field gel electrophoresis (PFGE) fingerprinting resulted in 1,226 PFGE profiles among the 2,318 isolates, with many clones being widely dispersed throughout the 6-year sampling period
AFFILIATIONS:  US FDA, Res Off, CVM, Div Anim & Food Microbiol, Laurel, MD 20708 USA