Disentangling a complex nationwide Salmonella Dublin outbreak associated with raw-milk cheese consumption, France, 2015 to 2016.

Disentangling a complex nationwide Salmonella Dublin outbreak associated with raw-milk cheese consumption, France, 2015 to 2016. Euro Surveill. 2019 Jan;24(3): Authors: Ung A, Baidjoe AY, Van Cauteren D, Fawal N, Fabre L, Guerrisi C, Danis K, Morand A, Donguy MP, Lucas E, Rossignol L, Lefèvre S, Vignaud ML, Cadel-Six S, Lailler R, Jourdan-Da Silva N, Le Hello S Abstract On 18 January 2016, the French National Reference Centre for Salmonella reported to Santé publique France an excess of Salmonella enterica serotype Dublin (S. Dublin) infections. We investigated to identify the source of infection and implement control measures. Whole genome sequencing (WGS) and multilocus variable-number tandem repeat analysis (MLVA) were performed to identify microbiological clusters and links among cases, animal and food sources. Clusters were defined as isolates with less than 15 single nucleotide polymorphisms determined by WGS and/or with identical MLVA pattern. We compared different clusters of cases with other cases (case-case study) and controls recruited from a web-based cohort (case-control study) in terms of food consumption. We interviewed 63/83 (76%) cases; 2,914 controls completed a questionnaire. Both studies' findings indicated that successive S. Dublin outbreaks from different sources had occurred between November 2015 and March 2016. In the case-control study, cases of distinct WGS clusters were more likely to have consumed M...
Source: Euro Surveill - Category: Infectious Diseases Authors: Tags: Euro Surveill Source Type: research

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The objective of this study was to evaluate the effectiveness of pulsed light (PL) treatment, a novel antimicrobial (LAPEN) wash and combinations thereof in inactivating Salmonella on stem scars of cherry tomato. The treatment effects on background microbiota and sensory quality was also investigated while in storage for 21 days at 10 °C. Three serotypes of Salmonella enterica were chosen to prepare inoculum for the current investigation for their link with tomato and produce outbreaks. Stem scars of tomato were spot inoculated before being treated with PL (1–63 J/cm2), LAPEN sanitizer (2 min) or combinatio...
Source: Food Control - Category: Food Science Source Type: research
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Source: PLoS Neglected Tropical Diseases - Category: Tropical Medicine Authors: Source Type: research
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Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
Pickled ready-to-eat meat (PRTEM) is a meat product that is treated with various seasonings and then cooked. PRTEM is a popular food consumed mostly in China and some Asian countries. Since this food is considered ‘ready to eat’, once it is contaminated by foodborne pathogens such as Salmonella, the prospect for significant morbidity, mortality, and immeasurable economic losses can occur. Here we investigated the prevalence and concentration of Salmonella in 107 PRTEM samples collected from Shaanxi, China during 2015–2016. Furthermore, we analyzed the serotype, antibiotic susceptibility, and presence of a...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
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Source: International Journal of Environmental Research and Public Health - Category: Environmental Health Authors: Tags: Review Source Type: research
Salmonella is one of the most common causes of food-borne diseases worldwide. While Salmonella molecular subtyping by Whole Genome Sequencing (WGS) is increasingly used for outbreak and source tracking investigations, serotyping remains as a first-line characterization of Salmonella isolates. The traditional phenotypic method for serotyping is logistically challenging, as it requires the use of more than 150 specific antisera and well trained personnel to interpret the results. Consequently, it is not a routine method for the majority of laboratories. Several rapid molecular methods targeting O and H loci or surrogate geno...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
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Source: Journal of Microbiological Methods - Category: Microbiology Source Type: research
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Source: Biosensors and Bioelectronics - Category: Biotechnology Source Type: research
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Source: Health News from Medical News Today - Category: Consumer Health News Tags: Nutrition / Diet Source Type: news
This article highlights the contributions made by public health laboratories in transforming PulseNet's surveillance and describes how the transformation is changing local and national surveillance practices. Our data show that WGS is better at identifying clusters than PFGE, especially for clonal organisms such as Salmonella Enteritidis. The need to develop prioritization schemes for cluster follow-up and additional resources for both public health laboratory and epidemiology departments will be critical as PulseNet implements WGS for foodborne disease surveillance in the United States. PMID: 31682558 [PubMed - in process]
Source: Public Health Reports - Category: International Medicine & Public Health Tags: Public Health Rep Source Type: research
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