ANTIMICROBIAL-RESISTANCE AMONG Escherichia coli ISOLATED FROM EITHER DIARRHEIC OR HEALTHY DOGS IN ITUVERAVA, SO PAULO STATE, BRAZIL.
From January to December of 2006, 92 and 75 Escherichia coli isolates from diarrheic and healthy dogs, respectively, were examined for resistance to 11 antimicrobial agents. The predominantly observed resistance was to streptomycin (86.0%), cephalothin (71.0%), gentamicin (62.0%), amoxicillin (59.0%) among the isolates from diarrheic dogs and to nalidicxic acid (27.0%), cephalothin (25.0%), tetracycline (19.0%), ampicillin (19.0%) among the isolates from healthy dogs. Multidrug-resistance to four or more antimicrobial agents was found among 72.0% and 15.0% of the isolates from diarrheic and healthy dogs, respectively, what is a reason for concern.
KEY-WORDS: Escherichia coli. Antimicrobial agents. Multidrug-resistance. Diarrheic dog. Healthy dog.
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