Occurrence of Listeria monocytogenes in salami

Borges, M. de F.; Siqueira, R. S. de; Bittencourt, A. M.; Vanetti, Maria Cristina Dantas; Gomide, L.A.M.

doi:10.1590/s0001-37141999000400012

Cited by 20 publications

(9 citation statements)

References 12 publications

(11 reference statements)

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“…In Brazil, a study from Borges, Siqueira, Bittencourt, Vanetti, and Gomide (1999) was conducted to assess four types of salami from different commercial brands, and L. monocytogenes was found in 13.3% of the samples. The authors note that for this type of product, the incidence of positives may vary from 5.0% to 23.0%.…”

Section: Introductionmentioning

confidence: 99%

Listeria monocytogenes in ready-to-eat, sliced, cooked ham and salami products, marketed in the city of São Paulo, Brazil: Occurrence, quantification, and serotyping

Martins

Germano

2011

Food Control

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Section: Introductionmentioning

confidence: 99%

Listeria monocytogenes in ready-to-eat, sliced, cooked ham and salami products, marketed in the city of São Paulo, Brazil: Occurrence, quantification, and serotyping

Martins

Germano

2011

Food Control

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“…In Brazil there was evalution of raw cured meat products for occurrence of Listeria monocytogenes. The pathogen was detected in 13.3% of Italian type samples of salami, while L. innocua occurred in 6.5% of the Italian type and in 16.6% of the Milanese type (2). In Turkey Listeria spp.…”

Section: Discussionmentioning

confidence: 99%

Frequency of Contamination with Listeria Monocytogenes of Raw Dried Cured Vacuum Packed Sausages

Hristo¹,

Fejzulla

Daskalova

2014

Macedonian Veterinary Review

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Original Scientific ArticleThe aim of this study was to collect actual data concerning the frequency of contamination with Listeria monocytogenes of some raw dried cured vacuum packed sausages, which are very popular in Bulgaria produced from Oct. 2004 till May 2008. 148 vacuum-packed samples were taken from 9 different food business operators during all seasons of the year. The samples were analyzed according to the USDA method for meat foods. Ten specimens were positive for presence of Listeria monocytogenes, which is equal to 6,75% of all tested samples. In two other raw dried cured sausages L.welshimeri and L.innocua were found, but these species are not pathogenic for consumers. In the period before the official implementation of the HACCP system (01.01.2006) in Bulgaria, 52 samples were examined and 5 Listeria monocytogenes isolates were found (~10%). 2,5 years after the HACCP implementation, 96 specimens from the same meat factories were tested and 5 Listeria monocytogenes isolates (5,2%) were detected. Samples taken from lots, produced in winter time were contaminated with Listeria monocytogenes more often (7 of all 10) than specimens taken during other seasons. Data was discussed through the point of view of the effectiveness of hygienic practices and HACCP system application. Also, application of the 'microbiological criterion' set in the COMMISSION REGULATION (EC) No 2073/2005 for ready-to-eat foods unable to support the growth of L. monocytogenes was considered.

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“…In Brazil, L. monocytogenes has been isolated from dairy products, sausages, salami, chicken, shrimp and animal carcasses 13,14,15,16,17 . In the last two decades, a few studies in Brazil have compared isolates from food, animals and the food processing environment, employing molecular typing methods to find a possible epidemiological relationship between the sources 16,18 , although no study has compared these strains with human isolates.…”

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confidence: 99%

Epidemiologia molecular de Listeria monocytogenes isoladas de diferentes fontes no Brasil

Moreno

Paixão

Moreno

et al. 2013

Braz. J. Vet. Res. Anim. Sci.

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Listeria monocytogenes is an important foodborne pathogen that primarily affects pregnant women, neonates, the elderly and immune-compromised individuals, and it may cause abortion, septicemia, and meningitis. From the 13 capsular groups described, serotypes 4b, 1/2b and 1/2a are most closely related to human infection. For this reason, serotyping has limited value as an epidemiological tool; thus, improved discriminatory typing methods are required to enhance knowledge of L. monocytogenes contamination and infection. The aim of this study was to characterize the genetic diversity of L. monocytogenes isolates in the pork processing industry in Sao Paulo, Brazil and human infection isolates by ERIC-PCR and single enzyme AFLP. Serotypes 1/2c and 4b were frequent among isolates from pork and slaughterhouse/market environments, whereas serotypes 4b and 1/2a were observed among human isolates. ERIC-PCR and AFLP revealed 34 and 31 distinct profiles, respectively, which had tendencies of separation according to serogroup and isolate origin. The genetic profiles from slaughterhouse and market environments suggest the possibility of different sources of Listeria contamination in the environment, although in certain cases, continuous contamination caused by the persistence of clonal strains is also a possibility.Keywords: Listeria monocytogenes. Public health. ERIC-PCR. AFLP. ResumoListeria monocytogenes é um importante patógeno de origem alimentar que afeta principalmente grávidas, neonatos, idosos e indivíduos imunocomprometidos, e pode causar abortamento, septicemia e meningite. Dos 13 grupos capsulares descritos, os sorotipos 4b, 1/2b e 1/2a são os mais relacionados à infecção humana. Por esta razão, a sorotipagem possui valor limitado como ferramenta epidemiológica e, dessa forma, métodos mais discriminatórios são necessários para melhorar o conhecimento sobre a contaminação e a infecção por L. monocytogenes. O objetivo deste estudo foi caracterizar a diversidade genética de isolados de L. monocytogenes da indústria de processamento de carne suína no Estado de São Paulo, Brasil, e compará-los a isolados de casos de infecção humana através do ERIC-PCR e AFLP com uma única enzima. Os sorotipos 1/2c e 4b foram frequentes em carne suína e ambientes de abatedouros e mercados, enquanto os sorotipos 4b e 1/2a foram observados nos isolados de humanos. ERIC-PCR e AFLP resultaram em 34 e 31 perfis distintos, respectivamente, com uma tendência a separar de acordo com o sorogrupo e a origem do isolado. Os perfis genéticos de ambiente dos abatedouros e mercados sugerem a possibilidade de diferentes origens de contaminação por Listeria nos ambientes estudados, porém, em alguns casos, é possível que ocorra a persistência de cepas clonais causando contaminação contínua.Palavras-chave: Listeria monocytogenes. Saúde pública. ERIC-PCR. AFLP.

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Occurrence of Listeria monocytogenes in salami

Cited by 20 publications

References 12 publications

Listeria monocytogenes in ready-to-eat, sliced, cooked ham and salami products, marketed in the city of São Paulo, Brazil: Occurrence, quantification, and serotyping

Listeria monocytogenes in ready-to-eat, sliced, cooked ham and salami products, marketed in the city of São Paulo, Brazil: Occurrence, quantification, and serotyping

Frequency of Contamination with Listeria Monocytogenes of Raw Dried Cured Vacuum Packed Sausages

Epidemiologia molecular de Listeria monocytogenes isoladas de diferentes fontes no Brasil

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