- ANTIBIOTIC RESISTANT BACTERIA IN FACTORY MEAT
12/02/2003 By email@example.com
J Food Microbiol. 2003 Aug 15;85(1-2):197-202.
Isolation of antimicrobial-resistant Escherichia coli from retail
purchased in Greater Washington, DC, USA.
Four hundred and seventy-two generic Escherichia coli isolates were
recovered from ground and whole retail beef, chicken, pork, and turkey
obtained from Greater Washington, DC, USA during the years 1998 to
Many of the isolates displayed resistance to tetracycline (59%),
sulfamethoxazole (45%), streptomycin (44%), cephalothin (38%) and
(35%). Resistance was also observed, but to a lesser extent, to gentamicin
(12%), nalidixic acid (8%), chloramphenicol (6%), ceftiofur (4%) and
ceftriaxone (1%). Sixteen percent of the isolates displayed resistance
one antimicrobial, followed by 23% to two, 23% to three, 12% to four,
five, 3% to six, 2% to seven and 2% to eight. Three E. coli isolates
shown to possess Shiga toxin genes (stx2) via PCR; all were O non-typeable
and were recovered from ground beef samples purchased on the same
day at the
same supermarket. One of the Shiga toxin-producing E. coli (STEC)
was susceptible to each of the antimicrobials tested, whereas one
resistance to cephalothin and sulfamethoxazole, and one displayed
to ampicillin, cephalothin, gentamicin, streptomycin, sulfamethoxazole
tetracycline. Findings from this study indicate that retail raw meats
often be contaminated with antimicrobial-resistant E. coli.
CM, White DG, Ge B, Zhang Y, McDermott PF, Ayers S, Zhao S, Meng
J. -- Department of Nutrition and Food Science, University of Maryland,
Park, MD 20742, USA.
David Wallinga, MD, MPA
Co-director, Food and Health Program
Institute for Agriculture and Trade Policy
2105 First Avenue South
Minneapolis, MN 55404