Analysis of Genetic Determinants Encoding Resistance to Heavy Metals and Disinfectants in .

is an important foodborne pathogen causing listeriosis. , existing in the natural environment, can also contaminate food products, which poses a serious threat to human health and life, especially for high-risk groups: pregnant women, newborn babies, and the elderly. Environmental adaptation of refers to the various strategies and mechanisms used by this bacterium to survive and thrive in diverse and often hostile environments that include, among others, toxic heavy metals and disinfectants.

Genetic Diversity, Virulence Factors and Antibiotic Resistance of from Food and Clinical Samples in Southern Poland.

Listeriosis is one of the most serious foodborne diseases under surveillance, with an overall mortality rate in the EU currently being high at 18.1%. Therefore, this study aims to investigate strains isolated from clinical and food samples for susceptibility to antimicrobials, presence of virulence factors, and genetic diversity.

Microbiological Risks of Traditional Raw Cow's Milk Cheese (Koryciński Cheeses).

Traditional and regional foods have been increasing in popularity among consumers in Poland for many years. The observed trend of searching for natural and authentic taste encourages many producers to craft products from raw milk, including Koryciński cheeses. The aim of this study was to assess the microbiological hazards resulting from the presence of pathogenic bacteria in Koryciński cheeses available in retail trade.

Prevalence of in food products in Poland.

Introduction And Objective: is a foodborne pathogen causing two main types of gastrointestinal diseases: emetic and diarrheal. The aim of this study was to investigate the prevalence of the group in ready-to-eat (RTE) food products available in retail in Poland.

Material And Methods: Samples were collected by Sanitary and Epidemiological Stations within the framework of the national official control and monitoring sampling programme in Poland.

Silent Genes: Antimicrobial Resistance and Antibiotic Production.

Silent genes are DNA sequences that are generally not expressed or expressed at a very low level. These genes become active as a result of mutation, recombination, or insertion. Silent genes can also be activated in laboratory conditions using pleiotropic, targeted genome-wide, or biosynthetic gene cluster approaches.

Genetic diversity of Listeria monocytogenes isolated from ready-to-eat food products in retail in Poland.

The study describes the characterization of Listeria monocytogenes isolated from the general 2017-2019 national official control and monitoring sampling program. A total of 60,928 of ready-to-eat (RTE) food products were collected in retail in Poland, while the number of L. monocytogenes contaminated samples was 67 (0.

Benzalkonium chloride and heavy metal resistance profiles of Listeria monocytogenes strains isolated from fish, fish products and food-producing factories in Poland.

Phenotypic and genotypic resistance to benzalkonium chloride (BC), cadmium and arsenic was tested (by susceptibility assays and molecular methods) in 287 Listeria monocytogenes strains isolated from fish and fish products, and food-producing factories in Poland. Overall, 40% of the isolates were resistant to BC, 56% to cadmium and 41% to arsenic (57% displayed resistance to more than one of the tested compounds). Among BC-resistant isolates, the most commonly detected resistance determinant was the qacH gene (83%).

Incidence and genetic variability of Listeria monocytogenes isolated from vegetables in Poland.

The aim of the present study is to investigate the prevalence and genetic diversity of Listeria monocytogenes in various fresh and frozen vegetable products available in Poland. The samples were collected at retail market within the framework of national official control and monitoring program. In the years 2016-2019 a total of 49 samples out of 8712 collected vegetable samples were positive for L.

Biofilm-Forming Ability of Pathogenic Bacteria Isolated from Retail Food in Poland.

Abstract: Biofilms have a significant impact on food safety in the food industry. Many foodborne outbreaks have been associated with pathogenic bacterial strains that can form a biofilm. The present study was conducted under the Official Control and Monitoring Program in Poland to examine the ability of pathogenic bacteria collected from retail food samples to form biofilms.

Occurrence and Characteristics of Listeria monocytogenes in Ready-to-Eat Meat Products in Poland.

Abstract: Listeria monocytogenes is a potential hazard for food safety and therefore for public health. The aim of the present study was to determine the prevalence and characteristics of L. monocytogenes in Polish ready-to-eat (RTE) meat products for retail sale.

Ciprofloxacin and nalidixic acid resistance of Salmonella spp. isolated from retail food in Poland.

Distribution of amino acid substitutions in the quinolone resistance-determining region (QRDR) of gyrA, gyrB, parC, parE and determinants of plasmid-mediated quinolone resistance (PMQR) were investigated among quinolone-resistant Salmonella spp. strains isolated from retail food in Poland in the years 2008-2013. Ten different amino acid substitutions were identified in QRDRs.

Occurrence and antimicrobial resistance of Salmonella spp. isolated from food other than meat in Poland.

Introduction And Objectives: Antimicrobial resistance of pathogenic bacteria can result in therapy failure, increased hospitalization, and increased risk of death. In Poland, Salmonella spp. is a major bacterial agent of food poisoning.

Prevalence of Campylobacter spp. in Retail Chicken, Turkey, Pork, and Beef Meat in Poland between 2009 and 2013.

The purpose of the present study was to determine the prevalence of thermophilic Campylobacter in poultry, pork, and beef meat at the retail level and to identify the main categories of meat representing the most significant reservoirs of Campylobacter. A monitoring study was conducted throughout Poland from 2009 to 2013. A total of 1,700 fresh meat samples were collected from supermarkets, large retail outlets, and smaller stores.

Resistance to Sulfonamides and Dissemination of sul Genes Among Salmonella spp. Isolated from Food in Poland.

Antimicrobial resistance of pathogenic bacteria, including Salmonella spp., is an emerging problem of food safety. Antimicrobial use can result in selection of resistant organisms.

Emergence of macrolide-resistant Campylobacter strains in chicken meat in Poland and the resistance mechanisms involved.

In this study, we investigated the molecular mechanisms involved in erythromycin resistance in the first resistant Campylobacter strains isolated from chicken meat in Poland, and analyzed their genetic relatedness. A total of 297 samples of raw chicken meat and giblets from retail trade in the Warsaw area collected between 2006 and 2009 were examined. Among 211 Campylobacter strains (52 C.

National monitoring study on microbial contamination of food-contact surfaces in hospital kitchens in Poland.

Introduction And Objective: The risk of food-borne infections in hospitalized patients with compromised immune systems is much higher and can also lead to more serious health consequences than among other population groups. Therefore, food hygiene within the hospital setting, should be handled in an appropriate manner. In 2008, there were 732 hospitals in Poland.

[The new microbiological hazards in food].

This paper describes the new microbiological hazards in food. For protecting human health, nowadays food safety authorities face with many challenges, that years ago were largely unheard. In 2011 verocytotoxigenic Escherichia coli O104:H4 has been isolated in Germany.

Occurrence of Campylobacter spp. in poultry and poultry products for sale on the Polish retail market.

In 2007 and 2008, a monitoring study was carried out in Poland to examine the occurrence of thermotolerant Campylobacter spp. in raw and cooked chicken products available on the retail market. A total of 912 samples were tested: 443 samples of raw chicken meat, 146 samples of giblets, and 323 ready-to-eat poultry products (150 samples of spit-roasted chicken, 56 samples of smoked chicken, and 117 samples of pâté and cold meats).

[Antibiotic resistance of bacteria Campylobacter sp].

Campylobacter is recognized as a major cause of human acute bacterial enteritis. The incidence of human Campylobacter infection has increased markedly in both developed and developing countries and, more significantly, so has rapid emergence of antibiotic-resistant Campylobacter strains. It is caused by improper applying antibiotics in treating people and too frequent applying these substances in the animal husbandry.