Salmonella serotypes, resistance patterns, and food vehicles of salmonellosis in southern Brazil between 2007 and 2012

  • Roberta Capalonga Federal University of Rio Grande do Sul, Institute of Food Science and Technology (ICTA/UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
  • Rosane Campanher Ramos Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
  • Jane Mari Correa Both Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
  • Mara Lúcia Tiba Soeiro Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
  • Solange Mendes Longaray Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
  • Simone Haas Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
  • Eduardo Cesar Tondo Federal University of Rio Grande do Sul, Institute of Food Science and Technology (ICTA/UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
Keywords: salmonellosis, Salmonella Enteritidis, antimicrobials, state of Rio Grande do Sul, Brazil

Abstract

Introduction: Previous studies have identified Salmonella as the main causative agent of foodborne diseases in the state of Rio Grande do Sul (RS), southern Brazil, between 1997 and 2006. This study aimed to describe the Salmonella serotypes, antimicrobial patterns, and food vehicles of salmonellosis that occurred in RS between 2007 and 2012.

Methodology: Information about Salmonella isolates and salmonellosis outbreaks registered in the official records of the Central Laboratory of RS (FEEPS/IPB-LACEN/RS) was analyzed.

Results: Among the 163 isolates investigated, 138 (84.7%) were identified as S. Enteritidis. The second and third most frequent serovars identified were S. Schwarzengrund (5.5%) and S. Typhimurium (3.7%). Homemade mayonnaise was the food vehicle most frequently identified (17.39%), followed by pastry products (15.94%) and beef (12.32%). Antimicrobial resistance was analyzed; 12 drugs were tested. Higher percentages of resistance were observed to nitrofurantoin (94.2%) and nalidixic acid (89.1%). The resistance to these two drugs was verified in 80.43% of the isolates. Multi-resistance to three and five drugs was verified in four and two isolates, respectively.

Conclusions: Comparing the results of the present study with results of previous reports, it was possible to conclude that S. Enteritidis and homemade mayonnaise are still the main serotype and food vehicle of salmonellosis in RS and that antimicrobial resistance has been increasing among S. Enteritidis responsible for foodborne outbreaks in southern Brazil.

Author Biographies

Roberta Capalonga, Federal University of Rio Grande do Sul, Institute of Food Science and Technology (ICTA/UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
Departamento de Ciências dos Alimentos, Instituto de Ciência e Tecnologia de Alimentos - ICTA/UFRGS
Rosane Campanher Ramos, Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
Division of Product Analyses (DAP), Section of Microbiology
Jane Mari Correa Both, Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
Division of Product Analyses (DAP), Section of Microbiology
Mara Lúcia Tiba Soeiro, Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
Division of Product Analyses (DAP), Section of Microbiology
Solange Mendes Longaray, Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
Division of Product Analyses (DAP), Section of Microbiology
Simone Haas, Foundation of Production and Health Research of Rio Grande do Sul, Central Laboratory of the Stare of Rio Grande do Sul (FEEPS/IPB-LACEN/RS), Division of Product Analyses (DAP), Section of Microbiology, Porto Alegre, Rio Grande do Sul, Brazil
Division of Product Analyses (DAP), Section of Microbiology
Eduardo Cesar Tondo, Federal University of Rio Grande do Sul, Institute of Food Science and Technology (ICTA/UFRGS), Porto Alegre, Rio Grande do Sul, Brazil
Departamento de Ciências dos Alimentos, Instituto de Ciência e Tecnologia de Alimentos - ICTA/UFRGS
Published
2014-07-14
How to Cite
1.
Capalonga R, Ramos R, Both J, Soeiro M, Longaray S, Haas S, Tondo E (2014) Salmonella serotypes, resistance patterns, and food vehicles of salmonellosis in southern Brazil between 2007 and 2012. J Infect Dev Ctries 8:811-817. doi: https://doi.org/10.3855/jidc.3791
Section
Outbreak