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      Prevalence and quantification of Listeria monocytogenes in beef offal at retail level in Selangor, Malaysia

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          Abstract

          A total of 63 beef offal samples (beef liver = 16; beef lung = 14; beef intestine = 9; beef tripe = 15; beef spleen = 9) from three wet markets (A, B, and C) in Selangor, Malaysia were examined for the prevalence and microbial load of Listeria monocytogenes. A combination of the most probable number and polymerase chain reaction (MPN-PCR) method was employed in this study. It was found that L. monocytogenes detected in 33.33% of the beef offal samples. The prevalence of L. monocytogenes in beef offal purchased from wet markets A, B, and C were 22.73%, 37.50% and 41.18% respectively. The density of L. monocytogenes in all the samples ranged from < 3 up to > 2,400 MPN/g. The findings in this study indicate that beef offal can be a potential vehicle of foodborne listeriosis.

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          Vibrio parahaemolyticus: a concern of seafood safety.

          Yi-Cheng Su, Chengchu Liu (2007)
          Vibrio parahaemolyticus is a human pathogen that is widely distributed in the marine environments. This organism is frequently isolated from a variety of raw seafoods, particularly shellfish. Consumption of raw or undercooked seafood contaminated with V. parahaemolyticus may lead to development of acute gastroenteritis characterized by diarrhea, headache, vomiting, nausea, and abdominal cramps. This pathogen is a common cause of foodborne illnesses in many Asian countries, including China, Japan and Taiwan, and is recognized as the leading cause of human gastroenteritis associated with seafood consumption in the United States. This review gives an overview of V. parahaemolyticus food poisoning and provides information on recent development in methods for detecting V. parahaemolyticus and strategies for reducing risk of V. parahaemolyticus infections associated with seafood consumption.
          Article 0 comments Cited 188 times – based on 0 reviews     Review now
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            An outbreak of gastroenteritis and fever due to Listeria monocytogenes in milk.

            Robert P. Hayes, B. Swaminathan, C. Dalton … (1997)
            After an outbreak of gastroenteritis and fever among persons who attended a picnic in Illinois, chocolate milk served at the picnic was found to be contaminated with Listeria monocytogenes. In investigating this outbreak, we interviewed the people who attended the picnic about what they ate and their symptoms. Surveillance for invasive listeriosis was initiated in the states that receive milk from the implicated dairy. Stool and milk samples were cultured for L. monocytogenes. Serum samples were tested for IgG antibody to listeriolysin O. Forty-five persons had symptoms that met the case definition for illness due to L. monocytogenes, and cultures of stool from 11 persons yielded the organism. Illness in the week after the picnic was associated with the consumption of chocolate milk. The most common symptoms were diarrhea (present in 79 percent of the cases) and fever (72 percent). Four persons were hospitalized. The median incubation period for infection was 20 hours (range, 9 to 32), and persons who became ill had elevated levels of antibody to listeriolysin O. Isolates from stool specimens from patients who became ill after the picnic, from sterile sites in three additional patients identified by surveillance, from the implicated chocolate milk, and from a tank drain at the dairy were all serotype 1/2b and were indistinguishable on multilocus enzyme electrophoresis, ribotyping, and DNA macrorestriction analysis. L. monocytogenes is a cause of gastroenteritis with fever, and sporadic cases of invasive listeriosis may be due to unrecognized outbreaks caused by contaminated food.
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              Identification, subtyping and virulence determination of Listeria monocytogenes, an important foodborne pathogen.

              D. Liu (2006)
              Listeria monocytogenes is an opportunistic intracellular pathogen that has become an important cause of human foodborne infections worldwide. Given its close relationship to other Listeria species and its tendency to produce non-specific clinical symptoms, the availability of rapid, sensitive and specific diagnostic tests for the differentiation of L. monocytogenes from other Listeria species is helpful for selecting appropriate treatment regimens. In addition, with L. monocytogenes comprising a diversity of strains of varying pathogenicity, the ability to precisely track the strains involved in listeriosis outbreaks and speedily determine their pathogenic potential is critical for the control and prevention of further occurrences of this deadly disease. Extensive research in recent decades has revealed significant insights regarding the molecular mechanisms of L. monocytogenes infection. This in turn has facilitated the development of laboratory procedures for enhanced detection and identification of L. monocytogenes, and has also contributed to the implementation of improved control and prevention strategies against listeriosis. The purpose of this review is to summarize recent progress in the species-specific identification, subtyping and virulence determination of L. monocytogenes strains, and to discuss future research needs pertaining to these important areas of listeriosis.
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                Author and article information

                Journal
                Journal ID (nlm-ta): Braz J Microbiol
                Journal ID (iso-abbrev): Braz. J. Microbiol
                Title: Brazilian Journal of Microbiology
                Publisher: Brazilian Society of Microbiology
                ISSN (Print): 1517-8382
                ISSN (Electronic): 1678-4405
                Publication date Collection: December 2013
                Publication date (Electronic): 10 March 2014
                Publication date (Electronic preprint): 24 January 2014
                Volume: 44
                Issue: 4
                Pages: 1169-1172
                Affiliations
                [1 ]Food Safety Research Centre, Faculty of Food Science and Technology, University Putra Malaysia, UPM Serdang, Selangor Darul Ehsan, Malaysia.
                [2 ]Faculty of Food Technology, Universiti Sultan Zainal Abidin, Kuala Terengganu, Terengganu Darul Iman, Malaysia.
                [3 ]Center for Southeast Asian Studies, Kyoto University, Yoshida Sakyo-ku, Kyoto, Japan.
                Author notes
                Send correspondence to C.H. Kuan. Food Safety Research Centre, Faculty of Food Science and Technology, University Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia. E-mail: raymondkuan87@ 123456gmail.com .
                Article
                Publisher ID: bmj-44-4-1169
                DOI: 10.1590/S1517-83822014005000002
                PMC ID: 3958183
                PubMed ID: 24688507
                SO-VID: eb05a599-7ffc-4662-9e06-b0a9a81145b2
                Copyright © Copyright © 2013, Sociedade Brasileira de Microbiologia
                License:

                All the content of the journal, except where otherwise noted, is licensed under a Creative Commons License CC BY-NC.

                History
                Date received : 22 July 2011
                Date accepted : 04 April 2013
                Categories
                Subject: Research Paper

                Keywords: listeria monocytogenes,most probable number (mpn),polymerase chain reaction (pcr),beef offal,prevalence
                Data availability:
                Keywords: listeria monocytogenes, most probable number (mpn), polymerase chain reaction (pcr), beef offal, prevalence

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