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Microorganisms
Special Issues
Transmission and Detection of Food and Environmental Pathogens 2.0
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Transmission and Detection of Food and Environmental Pathogens 2.0

A special issue of Microorganisms (ISSN 2076-2607). This special issue belongs to the section "Food Microbiology".

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 6303

Special Issue Editor

Dr. Nigel Cook

E-Mail Website
Guest Editor
Jorvik Food and Environmental Virology Ltd., York, UK
Interests: food and environmental virology; transmission of pathogens; detection; food safety
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is a continuation of our 2020 Special Issue, "Transmission and Detection of Food and Environmental Pathogens".

https://www.mdpi.com/journal/microorganisms/special_issues/transmission_detection_pathogens

To progress towards a full comprehension of the risk caused by pathogenic microorganisms transmitted via food and water, comprehensive information on the prevalence, mechanisms of contamination, and survival of pathogens is required. At present, our knowledge is incomplete, particularly for viruses and protozoan parasites. While such knowledge gaps exist, it will be difficult to devise effective systems to reduce contamination, and to formulate procedural control measures such as implementation of food safety criteria. International standard methods exist for a range of bacterial pathogens, and recently methods for the detection of foodborne viruses and protozoan parasites have been published. Their effective deployment will assist the elucidation of how food and environmental sources become contaminated, and the extent of contamination. Further advances are necessary, however. For example, methods based on nucleic acid amplification do not provide unambiguous information on the viability or infectivity of the target microorganism, and new approaches may be required, which will still need to be compatible with incorporation of the controls necessary to ensure full reliability of results. This Special Issue will present information on the latest research into the prevalence, transmission routes, and advanced methods of detection, of food- and environmentally transmitted microbial pathogens.

Dr. Nigel Cook
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Microorganisms is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • prevalence
  • transmission detection
  • foodborne pathogens
  • waterborne pathogens
  • environment

Published Papers (3 papers)

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Research

11 pages, 643 KiB  
Article
ESBL- and Carbapenemase-Producing Escherichia coli and Klebsiella pneumoniae among Bivalves from Portuguese Shellfish Production Areas
by Samanta Freire, Teresa Grilo, Bruna Rodrigues, Rui Oliveira, Carla Esteves, António Marques, Laurent Poirel and Marta Aires-de-Sousa
Microorganisms 2023, 11(2), 415; https://doi.org/10.3390/microorganisms11020415 - 7 Feb 2023
Cited by 5 | Viewed by 2228
Abstract
Bivalves are filter-feeding organisms and biomarkers of bacterial pollution. Our study aimed to analyze the occurrence and characteristics of extended-spectrum β-lactamase (ESBL)- and carbapenemase-producing Escherichia coli among bivalves. A total of 522 bivalve samples were collected along Portuguese shellfish production areas. Homogenized samples [...] Read more.
Bivalves are filter-feeding organisms and biomarkers of bacterial pollution. Our study aimed to analyze the occurrence and characteristics of extended-spectrum β-lactamase (ESBL)- and carbapenemase-producing Escherichia coli among bivalves. A total of 522 bivalve samples were collected along Portuguese shellfish production areas. Homogenized samples were screened for E. coli contamination on corresponding selective plates, allowing for concomitant growth of Klebsiella pneumoniae. E. coli growth was observed in 39% of the samples. Subsequent selective screening identified nine samples (4.4%) contaminated with ESBL producers, corresponding to E. coli (n = 7) and K. pneumoniae (n = 2), while a single carbapenemase-producing K. pneumoniae (0.5%) was identified. ESBLs were all CTX-M-types commonly identified in human isolates, i.e., CTX-M-32 (n = 4), CTX-M-15 (n = 4), and CTX-M-14 (n = 1). The carbapenemase producer harbored the blaGES-5 gene located on a ColE plasmid. Clonality was evaluated by multilocus sequence typing, identifying E. coli backgrounds as ST10, ST23, ST540, ST617, ST746, SLV206, and SLV2325, commonly identified among environmental and human strains. The K. pneumoniae isolates belonged to ST834, ST15, and DLV644. The occurrence of ESBL- and carbapenemase-producing Enterobacteriaceae in bivalves reveals how the marine environment constitutes a reservoir of critical bacterial pathogens, thus potentially representing a risk to human health. Full article
(This article belongs to the Special Issue Transmission and Detection of Food and Environmental Pathogens 2.0)
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11 pages, 1106 KiB  
Article
Occurrence and Molecular Characterization of Potentially Pathogenic Vibrio spp. in Seafood Collected in Sicily
by Annamaria Castello, Vincenzina Alio, Sonia Sciortino, Giuseppa Oliveri, Cinzia Cardamone, Gaspare Butera and Antonella Costa
Microorganisms 2023, 11(1), 53; https://doi.org/10.3390/microorganisms11010053 - 23 Dec 2022
Cited by 10 | Viewed by 1901
Abstract
Seafood can vehiculate foodborne illnesses from water to humans. Climate changes, increasing water contamination and coastlines anthropization, favor the global spread of Vibrio spp. and the occurrence of antibiotic-resistant isolates. The aim of this study was to evaluate the spread of potentially pathogenic [...] Read more.
Seafood can vehiculate foodborne illnesses from water to humans. Climate changes, increasing water contamination and coastlines anthropization, favor the global spread of Vibrio spp. and the occurrence of antibiotic-resistant isolates. The aim of this study was to evaluate the spread of potentially pathogenic Vibrio spp. in fishery products collected in Sicily and to assess their antibiotic resistance. Bacteriological and molecular methods were applied to 603 seafood samples to detect V. parahaemolyticus, V. cholerae, V. vulnificus, and Vibrio alginolyticus in order to assess their pathogenicity and antimicrobial resistance. About 30% of bivalves and 20% of other fishery products were contaminated by Vibrio spp.; V. parahaemolyticus accounted for 43/165 isolates, 3 of which were carrying either tdh or trh; V. cholerae accounted for 12/165 isolates, all of them non-O1 non-O139 and none carrying virulence genes; and V. vulnificus accounted for 5/165 isolates. The highest rates of resistance were observed for ampicillin, but we also detected strains resistant to antibiotics currently included among the most efficient against Vibrio spp. In spite of their current low incidence, their rise might pose further issues in treating infections; hence, these results stress the need for a continuous monitoring of antimicrobial resistance among fishery products and an effective risk assessment. Full article
(This article belongs to the Special Issue Transmission and Detection of Food and Environmental Pathogens 2.0)
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9 pages, 282 KiB  
Article
Occurrence and Characterisation of Colistin-Resistant Escherichia coli in Raw Meat in Southern Italy in 2018–2020
by Gaia Nobili, Gianfranco La Bella, Maria Grazia Basanisi, Annita Maria Damato, Rosa Coppola, Rachele Migliorelli, Valeria Rondinone, Pimlapas Leekitcharoenphon, Valeria Bortolaia and Giovanna La Salandra
Microorganisms 2022, 10(9), 1805; https://doi.org/10.3390/microorganisms10091805 - 8 Sep 2022
Cited by 4 | Viewed by 1607
Abstract
Colistin is a last-resort drug for the treatment of infections by carbapenem-resistant Enterobacteriaceae, and the emergence of colistin resistance poses a serious clinical challenge. The aim of this study was to investigate the occurrence of colistin-resistant Escherichia coli in retail meat in [...] Read more.
Colistin is a last-resort drug for the treatment of infections by carbapenem-resistant Enterobacteriaceae, and the emergence of colistin resistance poses a serious clinical challenge. The aim of this study was to investigate the occurrence of colistin-resistant Escherichia coli in retail meat in Southern Italy in 2018–2020. Of 570 samples, 147 contained E. coli. Two out of 147 (1.4%) E. coli showed a non-wild-type phenotype to colistin and harboured mcr-1. mcr-1 was also detected in a wild-type isolate, resulting in a 2% mcr prevalence. mcr-1-positive isolates originated from turkey meat collected in Apulia (n = 2) and Basilicata (n = 1). A whole-genome sequencing analysis confirmed mcr-1.2 and mcr-1.1 in two and one isolate, respectively. The strains were diverse, belonging to three multi-locus sequence types (ST354, ST410, SLV of ST10) and harbouring genes mediating resistance to antimicrobials in two, six and seven classes. mcr-1 was carried by IncX4 plasmids with high nucleotide similarity to IncX4 plasmids harbouring mcr-1.2 and mcr-1.1 in Enterobacterales from different sources and geographical regions. This is the first study reporting updates on E. coli non-wild-type to colistin from retail meat in Southern Italy, highlighting the importance of phenotypic and genotypic antimicrobial resistance surveillance to contain the dissemination of mcr among E. coli. Full article
(This article belongs to the Special Issue Transmission and Detection of Food and Environmental Pathogens 2.0)
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