scholarly journals A Comprehensive Review on Molecular Characteristics and Food-Borne Outbreaks of Listeria monocytogenes

2019 ◽  
Vol 7 (2) ◽  
pp. 33-45
Author(s):  
Dipika Malakar ◽  
◽  
Probodh Borah ◽  
Leena Das ◽  
Nachimuthu Senthil Kumar ◽  
...  
Keyword(s):  
Public Health ◽  
Listeria Monocytogenes ◽  
World Wide ◽  
Molecular Characteristics ◽  
Virulence Determinants ◽  
Public Health Importance ◽  
Animal Populations ◽  
Food Borne ◽  
Route Of Transmission ◽  
Contaminated Food

Listeria monocytogenes is an important foodborne pathogen which causes serious invasive illness, and affects mostly elderly and immune-compromised people, pregnant women, newborns and infants leading to listeriosis. L. monocytogenes can cause vast outbreaks due to consumption of contaminated food products, and has a significant role in public health. The pathogen has been isolated from food, human and animal samples world-wide. Neonatal listeriosis is most commonly reported incase of humans, where as in animal populations, spontaneous abortions, meningoencephalitis and endometritis are the most common. The purpose of this review is to enumerate Listeria epidemiology world-wide by using publicly available data from CDC, FDA and ProMED and by describing the details such as countries involved, source, suspected and confirmed case counts etc. to understand its public health importance. This review also offers a description of bacteriological characteristics, taxonomy, virulence determinants, typing methods, a detailed account of listeriosis in human and in animals and an up-to-date information of the recent outbreaks of L. monocytogenes. We specifically aimed at the prevalence and epidemiology of L. monocytogenes globally, since it is a major food-borne pathogen and is the third leading cause of death due to food poisoning. This review paper provides information on L. monocytogenes to understand the better management of the infection, the source of infection and route of transmission of the disease. Most of the listeriosis cases were linked with the consumption of contaminated food and it is important to identify the type of food materials to mitigate the risk of Listeriosis in the high-risk populations.

Biofilm Formation and Associated Genes in Listeria Monocytogenes

2017 ◽  
Vol 12 (3) ◽  
Author(s):  
S. R. Warke ◽  
V. C. Ingle ◽  
N. V. Kurkure ◽  
P. A. Tembhurne ◽  
Minakshi Prasad ◽  
...  
Keyword(s):  
Public Health ◽  
Listeria Monocytogenes ◽  
Multiplex Pcr ◽  
Food Processing ◽  
Biofilm Formation ◽  
Milk Samples ◽  
Biofilm Production ◽  
Food Borne ◽  
Serious Infections ◽  
Microtiter Assay

Listeria monocytogenes, an opportunistic food borne pathogen can cause serious infections in immunocompromised individuals. L. monocytogenes is capable of producing biofilm on the surface of food processing lines and instruments.The biofilm transfers contamination to food products and impose risk to public health. In the present study biofilm producing ability of L. monocytogenes isolates were investigated phenotypically and genotypically by microtiter assay and multiplex PCR, respectively. Out of 38 L. monocytogenes isolates 14 were recovered from animal clinical cases, 12 bovine environment and 12 from milk samples. A total of 3 (21.42%) clinical, 2 (16.66%) environment and 3 (25%) milk samples respectively, revealed biofilm production in microtiter assay. Cumulative results showed that 23 (60.52%) out of 38 strains of L. monocytogenes were positive for luxS and flaA gene and 1 (2.63%) was positive only for the flaA gene.

scholarly journals Listeria monocytogenes: An emerging food-borne pathogen and its public health implications

2016 ◽  
Vol 10 (02) ◽  
pp. 149-154 ◽  
Author(s):  
Waffa W Reda ◽  
Khaled Abdel-Moein ◽  
Ahmed Hegazi ◽  
Yasmin Mohamed ◽  
Khaled Abdel-Razik
Keyword(s):  
Listeria Monocytogenes ◽  
Raw Milk ◽  
Food Samples ◽  
Food Borne ◽  
Contaminated Food ◽  
Luncheon Meat ◽  
Stool Specimens ◽  
Polymerase Chain ◽  
Minced Meat

Introduction: Listeria monocytogenes is considered one of the most important food-borne pathogens transmitted to humans via contaminated food. The aim of the present study was to demonstrate the importance of L. monocytogenes as a food-borne pathogen. Methodology: A total of 340 samples were collected from different localities in El Giza Governorate, Egypt, to check the occurrence of L. monocytogenes in that area. The collected samples comprised 250 food samples, 40 swabs from food refrigerators, and 50 stool specimens from diarrheic children. L. monocytogenes was isolated from the examined samples according to the International Organization for Standardization. The isolates were tested biochemically using Listeria Microbact 12L and confirmed by polymerase chain reaction. Results: The isolation rates of L. monocytogenes were 8% in beef burger, 4% in minced meat, 4% in luncheon meat, while sausage samples were all negative. Eight percent of raw milk samples were positive for L. monocytogenes, whereas cheese samples and refrigerator swabs were negative. Only Listeria grayi was isolated from human stools (2.5%). Conclusion: The high isolation rates of L. monocytogenes among the examined food stuffs highlight the crucial role of food as an important vehicle for this pathogen. More efforts should be made to ensure safe handling and processing of these foods to reduce the transmission of L. monocytogenes to humans.

scholarly journals REALIS: Postgenomic Analysis ofListeria monocytogenes

2002 ◽  
Vol 3 (1) ◽  
pp. 32-34 ◽  
Author(s):  
Uwe Kärst ◽  
The REALIS Consortium
Keyword(s):  
Listeria Monocytogenes ◽  
Opportunistic Infections ◽  
External Environment ◽  
Low Ph ◽  
Health Care Managers ◽  
Food Borne ◽  
Contaminated Food ◽  
Oflisteria Monocytogenes ◽  
Immunocompromised Hosts ◽  
Host Tissues

Listeria monocytogenesis a remarkably successful food-borne pathogen. It is capable a) of surviving and proliferating under conditions that exist within the food chain, such as at low temperatures, high salt and low pH and b) of colonizing animal host tissues after ingestion of contaminated food, causing opportunistic infections mainly, but not exclusively, in immunocompromised hosts. The ultimate goals of REALIS are two fold: Firstly, it aims to completely decipher all genes required for survival in and adaptation ofListeria monocytogenesto two very different environments, ie., the infected host and the external environment. Secondly, using genomics and postgenomic tools, REALIS seeks to precisely address fundamental questions regarding evolutionary relationships between pathogenic and non-pathogenic Listeria and to define qualities of particularly successful clonal pathovariants in causing disease. This project will provide both industry and health care managers with rational approaches to curbing food-borne contamination, minimising risks of infection and providing novel pharmacological approaches for halting the fulminant course of infection.

scholarly journals Distribution of serotypes of Listeria monocytogenes in chicken meats in Turkey

2020 ◽  
Vol 70 (4) ◽  
pp. 1859
Author(s):  
S. SAHIN ◽  
R. KALIN ◽  
MN MOGULKOC
Keyword(s):  
Public Health ◽  
Listeria Monocytogenes ◽  
Large Scale ◽  
Meat Products ◽  
Health Problems ◽  
Chicken Meat ◽  
Serotype Distribution ◽  
Food Borne ◽  
Serotype 1 ◽  
Food Borne Infections

Listeria monocytogenes is one of the important causes of food-borne infections. This study was conducted to determine the presence of L. monocytogenes and its serotype distribution in a total of 400 packaged chicken meat products (drumstick, breast, wing, and whole chicken) from different national companies. L. monocytogenes contamination was detected in 26.5% (106 in 400) of all samples when the products considered, drumsticks, breasts, wings, and whole chickens showed 47%, 15%, 35, and 9% positivity respectively. Four important serotypes of L. monocytogenes in human listeriosis (1/2a, 1/2b, 1/2c and 4b) were identified, and serotype 1/2a (94.3%) was determined as predominant in packaged chicken meats. The present study revealed that L. monocytogenes 1/2a serotype is prevalent in chicken meats and this may cause public health problems in Turkey. Further studies in poultry meats should be conducted on a large scale such as regional or national big markets to determine the presence of the pathogen and its dominant serotypes.

scholarly journals Antilisterial Potential of Lactic Acid Bacteria in Eliminating Listeria monocytogenes in Host and Ready-to-Eat Food Application

2021 ◽  
Vol 12 (1) ◽  
pp. 234-257
Author(s):  
Phui-Chyng Yap ◽  
Nor-Aziyah MatRahim ◽  
Sazaly AbuBakar ◽  
Hai Yen Lee
Keyword(s):  
Lactic Acid ◽  
Listeria Monocytogenes ◽  
Lactic Acid Bacteria ◽  
Vaccine Development ◽  
Antimicrobial Properties ◽  
Listeriolysin O ◽  
Gene Coding ◽  
Food Borne ◽  
Eagle Effect ◽  
Contaminated Food

Listeriosis is a severe food borne disease with a mortality rate of up to 30% caused by pathogenic Listeria monocytogenes via the production of several virulence factors including listeriolysin O (LLO), transcriptional activator (PrfA), actin (Act), internalin (Int), etc. It is a foodborne disease predominantly causing infections through consumption of contaminated food and is often associated with ready-to-eat food (RTE) and dairy products. Common medication for listeriosis such as antibiotics might cause an eagle effect and antibiotic resistance if it is overused. Therefore, exploration of the use of lactic acid bacteria (LAB) with probiotic characteristics and multiple antimicrobial properties is increasingly getting attention for their capability to treat listeriosis, vaccine development, and hurdle technologies. The antilisterial gene, a gene coding to produce antimicrobial peptide (AMP), one of the inhibitory substances found in LAB, is one of the potential key factors in listeriosis treatment, coupled with the vast array of functions and strategies; this review summarizes the various strategies by LAB against L. monocytogenes and the prospect in development of a ‘generally regarded as safe’ LAB for treatment of listeriosis.

scholarly journals Towards One Health: Increasing Awareness of Animal Health Among Public Health Stakeholders

2014 ◽  
Vol 6 (1) ◽  
Author(s):  
Fernanda C. Dórea ◽  
Céline Dupuy ◽  
Judy E. Akkina
Keyword(s):  
Public Health ◽  
One Health ◽  
Health Workers ◽  
Animal Health ◽  
Public Health Importance ◽  
Animal Populations ◽  
Public Health Workers ◽  
The One ◽  
Great Public Health

The recent focus on the 'One Medicine' concept has resulted in an increased awareness that the control of diseases in animal populations, whether zoonotic or not, can be of great public health importance. However, awareness of the activities developed in the field of animal health is still low among public health workers. In this roundtable the facilitators will encourage discussion regarding what can public and animal health learn from each other, focusing particularly on how this cooperation can be promoted.

A case of foodborne listeriosis linked to a contaminated food-production process

2013 ◽  
Vol 62 (10) ◽  
pp. 1614-1616 ◽  
Author(s):  
K. H. Lamden ◽  
A. J. Fox ◽  
C. F. L. Amar ◽  
C. L. Little
Keyword(s):  
Public Health ◽  
Listeria Monocytogenes ◽  
Production Process ◽  
Health Information ◽  
Food Production ◽  
Meat Production ◽  
Important Public Health ◽  
Public Health Information ◽  
Contaminated Food ◽  
Sporadic Cases

We report a case of listeriosis linked to consumption of contaminated ox tongue. A public health investigation identified intermittent contamination at a meat-production process and ox-tongue production was discontinued. Sensitive molecular subtyping methods are improving our ability to track sources of Listeria monocytogenes contamination through the food chain. Detailed investigation of sporadic cases of listeriosis can provide important public health information and its wider use is encouraged.

scholarly journals Isolation and identification of bacteria associated with fermentation of melon seed for Ogiri Sold in Owerri, Nigeria

2021 ◽  
Vol 3 (1) ◽  
pp. 057-061
Author(s):  
Joy Nkeiruka Dike-Ndudim ◽  
Chizaram Winners Ndubueze ◽  
Juliet Chidinma Ezihe ◽  
Emeka Okechukwu
Keyword(s):  
Public Health ◽  
Public Health Importance ◽  
Isolation And Identification ◽  
Public Health Implication ◽  
The Public ◽  
Food Borne ◽  
Significant Difference ◽  
Identification Of Bacteria ◽  
Food Condiments ◽  
Melon Seeds

In order to ascertain the public health implication of the consumption of the fermented melon (Cucumismelo), known as Ogiri, consumed in all South Eastern Nigeria and beyond as a food condiment, thirty samples of locally fermented melon seeds, Ogiri, were randomly purchased from three markets in Owerri metropolis in Imo State. These samples were microbiologically analysed using pour plate technique on nutrient agar, MacConkey and Salmonella Shigella agar at 370C for 24 hours. The viable and mean counts were determined and the data obtained were statistically analyzed. There was no significant difference between the contamination of the samples (p>0.05). These organisms, following the order of predominance were isolated; Pseudomonas aeruginosa, Escherichia coli, Klebsiella pneumoniae and Staphylococcus aureus. The presence of these microorganisms of public health importance in food condiments pose a risk of enteritis and other food borne diseases in some individuals after its intake. Thus, the health organizations should embark on public and personal enlightenment programs targeted at both the producer and the consumer.

Sign in / Sign up

Export Citation Format

Share Document