- Journal of Food Protection¢ç, Volume 74,
Number 10, October 2011 , pp. 1625-1629(5)
- Kelman, Alina; Soong, Yee-Ann; Dupuy, Nicole; Shafer,
Daniel; Richbourg, William; Johnson, Kourtney; Brown, Twain; Kestler, Edward;
Li, Yi; Zheng, Jie; McDermott, Patrick; Meng, Andjianghong
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- http://www.ingentaconnect.com/content/iafp/jfp/2011/00000074/00000010/art00006
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- Abstract:
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- The aim of this study was to characterize antimicrobial
resistance in Staphylococcus aureus, including methicillin-resistant S.
aureus (MRSA), recovered from raw retail meat products purchased in the
Washington, D.C., area. From March to August 2008, 694 samples of ground
beef (n = 198), ground pork (n = 300), and ground turkey (n = 196) were
collected by random sampling from stores of three grocery chains. In total,
200 S. aureus isolates (29%) were recovered by direct plating. When tested
for susceptibility to 22 antimicrobials, 69% of the S. aureus isolates
were resistant to tetracycline, 26% to penicillin, 17% to ampicillin, 13%
to methicillin, 8% to erythromycin, 4.5% to clindamycin, 1.5% to gentamicin,
and 0.5% to chloramphenicol, oxacillin, cefoxitin, or quinupristin-dalfopristin.
However, 27% of the isolates were susceptible to all tested antimicrobials.
More turkey and pork isolates were resistant to ampicillin, penicillin,
and tetracycline than were beef isolates (P < 0.05). Additionally, 17%
of the turkey and 17% of the pork isolates were resistant to methicillin
(MIC ¡Ã 16 ¥ìg/ml), whereas no beef isolates were
resistant to the antimicrobial agent. A single MRSA (methicillin MIC >
32 ¥ìg/ml) isolate containing the mecA gene with additional
resistance to erythromycin, clindamycin, oxacillin plus 2% NaCl, cefoxitin,
ampicillin, penicillin, quinupristin-dalfopristin, tetracycline, and gentamicin
was recovered from one pork sample. The presence of antimicrobial-resistant
S. aureus, coupled with the relative lack of such studies in the United
States, suggests that further investigations on MRSA in the food supply
are needed despite the low rate of MRSA found in this particular study.
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- Patricia A. Doyle DVM, PhD Bus Admin, Tropical Agricultural
Economics Univ of West Indies Please visit my "Emerging Diseases"
message board at:http://www.emergingdisease.org/phpbb/index.php Also
my new website: http://drpdoyle.tripod.com/ Zhan le Devlesa tai
sastimasa Go with God and in Good Health
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- Benjamin Franklin said, "They that
- can give up essential liberty to obtain a little temporary
safety deserve
- neither liberty nor safety."
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