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ANTIMICROBIAL RESISTANCE IN SALMONELLA ENTERITIDIS ISOLATED FROM FOODS INVOLVED IN HUMAN FOODBORNE OUTBREAKS THAT OCCURRED IN THE SOUTH OF BRAZIL, 1999–2000
Author(s) -
GEIMBA M. P.,
TONDO E. C.,
BRANDELLI A.
Publication year - 2005
Publication title -
journal of food safety
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.427
H-Index - 43
eISSN - 1745-4565
pISSN - 0149-6085
DOI - 10.1111/j.1745-4565.2005.00573.x
Subject(s) - salmonella enteritidis , microbiology and biotechnology , nalidixic acid , salmonella , antimicrobial , tetracycline , antibiotic resistance , biology , streptomycin , kanamycin , trimethoprim , chloramphenicol , antibiotics , bacteria , genetics
Antimicrobial resistance was determined for 73 isolates of Salmonella enteritidis isolated from foods involved in human foodborne outbreaks that occurred in the South of Brazil, from 1999 to 2000. The isolates were individually tested against 10 antimicrobial agents using a disc diffusion method. Most isolates were susceptible to all drugs tested. No S. enteritidis isolates were resistant to sulfamethoxazole/trimethoprim or chloramphenicol. The predominant resistance observed was to streptomycin (S) (37%), gentamicin (GEN) (13.7%) and nalidixic acid (NAL) (13.7%), while intermediate resistance was observed most often for tetracycline (53.4%), neomycin (NEO) (30.1%) and GEN (15.1%). Resistance was verified in 40 isolates (54%), which were grouped in 15 different patterns. Multiple resistance was presented in 17 (23%) of the isolates, and one isolate exhibited resistance to four drugs (NEO, kanamycin, S and NAL), demonstrating the involvement of multiresistant S. enteritidis strains with foodborne outbreaks.