Antimicrobial resistance in Salmonella enteritidis strains isolated from broiler carcasses, food, human and poultry-related samples.

Int J Food Microbiol

Departamento de Ciência de Alimentos, ICTA, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre 91501-970, Brazil.

Published: January 2005

AI Article Synopsis

  • A study analyzed 91 Salmonella enteritidis isolates from various sources in Southern Brazil, revealing that 90.1% exhibited resistance to at least one antimicrobial drug.
  • The most resistant strains were particularly noted for sulfonamides (75.8%) and nitrofurantoin (52.8%), while lower resistance was seen with antibiotics like tetracycline and streptomycin.
  • Over half of the strains (51.6%) were multiresistant, and the high levels of resistance in poultry-related samples highlight the urgent need for careful antibiotic use to combat this issue.

Article Abstract

Antimicrobial resistance was investigated in 91 Salmonella enteritidis isolates from broiler carcasses, food, human and poultry-related samples originated from South of Brazil. A great proportion of resistant strains was found, 90.1% showing resistance to at least one antimicrobial drug. There was a high resistance to sulfonamides (75.8%) and nitrofurantoin (52.8%). Lower levels of resistance were found for tetracycline (15.4%), streptomycin (7.7%), nalidixic acid (7.7%), gentamicin (5.5%), norfloxacin (3.3%), trimethoprim (3.3%), cefalotin (2.2%), ampicillin (1.1%), and chloramphenicol (1.1%). Resistance to ciprofloxacin was not detected. A total of 51.6% of S. enteritidis strains were multiresistant (resistance to two or more antimicrobial agents) and 18 resistance patterns were found. The highest resistance was found in strains isolated from poultry-related samples, where all strains were resistant to at least one antimicrobial agent. No predominant resistance pattern was related to phage type in our isolates. The high number of antimicrobial resistant S. enteritidis found in Southern Brazil indicates the need for the prudent drugs uses to diminish the development and spread of antimicrobial resistance.

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http://dx.doi.org/10.1016/j.ijfoodmicro.2004.04.022DOI Listing

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