Twenty Years of Listeria in Brazil: Occurrence of Listeria Species and Listeria monocytogenes Serovars in Food Samples in Brazil between 1990 and 2012Report as inadecuate




Twenty Years of Listeria in Brazil: Occurrence of Listeria Species and Listeria monocytogenes Serovars in Food Samples in Brazil between 1990 and 2012 - Download this document for free, or read online. Document in PDF available to download.

BioMed Research International - Volume 2015 2015, Article ID 540204, 8 pages -

Research Article

Laboratório de Zoonoses Bacterianas, Pavilhão Rocha Lima, Instituto Oswaldo Cruz, Fiocruz, Avenida Brasil 4365, Manguinhos, 21040-360 Rio de Janeiro, RJ, Brazil

Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Faculdade de Medicina, Universidade Federal do Rio de Janeiro, Avenida Carlos Chagas Filho 373, CCS, Bloco K, 2° andar, Sala 49, Cidade Universitária, Ilha do Fundão, 21941-902 Rio de Janeiro, RJ, Brazil

Received 25 March 2015; Revised 9 July 2015; Accepted 14 July 2015

Academic Editor: Pierre Colin

Copyright © 2015 Deyse Christina Vallim et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Listeria spp. isolated from different food products and collected from 12 Brazilian states were sent to the Laboratory of Bacterial Zoonoses Oswaldo Cruz Institute, Brazil for identification. The aims of this study were to characterize these isolates, from 1990 to 2012, by using biochemical, morphological, and serotyping tests, and to analyze the distribution of L. monocytogenes serotypes on different food products and geographical locations. Serotyping was performed using polyclonal somatic and flagellar antisera. Of 5953 isolates, 5770 were identified as Listeria spp., from which 3429 59.4% were L. innocua, 2248 38.9% were L. monocytogenes, and 93 1.6% were other Listeria spp. L. innocua was predominantly isolated from 1990 to 2000, while L. monocytogenes was from 2001 to 2012. Regarding the serotype distribution in the foods, serotypes 1-2a and 4b were most common in processed meat and ready-to-eat products, respectively; serotypes 1-2a, 1-2b, and 4b were the most common in nonprocessed meat. The results above confirm the presence of the main serotypes of L. monocytogenes in different parts of the food chain from three regions of the country and emphasize the importance of improving the control measures, as tolerance zero policy and microbiological surveillance in Brazil.





Author: Deyse Christina Vallim, Cristina Barroso Hofer, Rodrigo de Castro Lisbôa, André Victor Barbosa, Leonardo Alves Rusak, Crist

Source: https://www.hindawi.com/



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