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Antibiotic resistance of Escherichia coli O157:H7 and O157:NM isolated from animals, food, and humans.

Antibiotic resistance of Escherichia coli O157:H7 and O157:NM isolated from animals, food, and humans.

Authors :
Meng J
Zhao S
Doyle MP
Joseph SW
Source :
Journal of food protection [J Food Prot] 1998 Nov; Vol. 61 (11), pp. 1511-4.
Publication Year :
1998

Abstract

Antibiotic resistance was determined for 118 E. coli O157:H7 and 7 O157:NM isolates from animals, foods, and humans. Among the 125 isolates, 30 (24%) were resistant to at least one antibiotic and 24 (19%) were resistant to three or more antibiotics. Cattle isolates had the highest rate (34%) of antibiotic resistance. The seven resistant food isolates were all from ground beef. The most frequent resistance type overall was streptomycin-sulfisoxazole-tetracycline, which accounted for over 70% of the resistant strains. Two E. coli O157:NM isolates from cattle were resistant to six antibiotics: ampicillin, kanamycin, sulfisoxazole, streptomycin, tetracycline, and ticarcillin. Streptomycin was the most common antibiotic to which E. coli O157:H7 and O157:NM were resistant (29 out of 30 isolates), followed by tetracycline (26 isolates). This study suggests that E. coli O157:H7 and O157:NM have developed resistance to antibiotics. Research is needed to define mechanisms of antibiotic resistance in E. coli O157:H7 and to minimize the development of resistance.

Details

Language :
English
ISSN :
0362-028X
Volume :
61
Issue :
11
Database :
MEDLINE
Journal :
Journal of food protection
Publication Type :
Academic Journal
Accession number :
9829195
Full Text :
https://doi.org/10.4315/0362-028x-61.11.1511