Lin T. Brandal

Outbreak of Salmonella Typhimurium ST19 linked to passerine birds and cats in Norway, March to July 2024

Hilde Marie Lund, Lin T. Brandal, Liz Ertzeid Ødeskaug, Heidi Lange et autres

PURPOSE: In June 2024, a genomic cluster of seven Salmonella Typhimurium - sequence type 19, and cluster type 21092 - was detected in Norway, triggering a national outbreak investigation. METHODS: Information about new cases was collected from the Norwegian Surveillance System for …

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Insights into recurring multi-country outbreaks of Salmonella Strathcona associated with tomatoes, Europe, 2011 to 2024

Vivien Brait, L Böff, Natalia Marta Zmarlak-Feher, Nathalie Jourdan‐Da Silva et autres

Notifications of Salmonella Strathcona infections increased in Europe in 2023 prompting a multi-country outbreak investigation. We aimed to describe the epidemiology of S . Strathcona infections in 17 European countries 2011–2024, investigate the genetic relatedness of S . Strathcona isolates and identify …

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Insights into recurring multi-country outbreaks of $Salmonella$ Strathcona associated with tomatoes, Europe, 2011 to 2024

Vivien Brait, L Böff, Natalia Marta Zmarlak-Feher, Nathalie Jourdan‐Da Silva et autres

Notifications of Salmonella Strathcona infections increased in Europe in 2023 prompting a multi-country outbreak investigation. We aimed to describe the epidemiology of S . Strathcona infections in 17 European countries 2011–2024, investigate the genetic relatedness of S . Strathcona isolates and identify …

Impact of the COVID-19 pandemic on five food- and waterborne diseases in six European countries, 2016–21

Johanna J. Young, Martine Grosos Aabye, Ondřej Daniel, Michaela Špačková et autres

The COVID-19 pandemic required a shift in healthcare and public health focus and led to numerous public health measures also affecting food- and waterborne diseases (FWDs). We describe the impact of the pandemic using the number of confirmed domestically-acquired and travel-related cases …

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A large outbreak of multiple Salmonella serovars linked to alfalfa sprouts in Norway, October to December 2024

Arthur Rakover, Liz Ertzeid Ødeskaug, Hilde Marie Lund, Heidi Lange et autres

PURPOSE: This study investigates a nationwide Salmonella outbreak in Norway during October-December 2024 involving four different serovars-S. Newport, S. Typhimurium, S. Kisarawe, and S. Kinondoni. The investigation aimed to assess the outbreak's scope, identify the source, and implement control measures. METHODS: Epidemiological …

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Comparative genomics of clinical hybrid Escherichia coli strains in Norway

Misti D. Finton, Roger Meisal, Davide Porcellato, Lin T. Brandal et autres

The global rise of hybrid Escherichia coli (E. coli) is a major public health concern, as enhanced virulence from multiple pathotypes complicates the traditional E. coli classification system and challenges clinical diagnostics. Hybrid strains are particularly concerning as they can infect both …

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Key role of whole genome sequencing in resolving an international outbreak of monophasic Salmonella Typhimurium linked to chocolate products

Valeska Laisnez, Amoolya Vusirikala, Charlotte Salgaard Nielsen, Vera Cantaert et autres

BACKGROUND: In February 2022, the United Kingdom (UK) detected a cluster of monophasic Salmonella Typhimurium based on whole genome sequencing (WGS). Subsequently, several countries reported cases belonging to this cluster. Epidemiological, microbiological and traceability investigations pointed toward a chocolate food business operator …

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Prevalence and characteristics of 11 potentially diarrhoeagenic microbes in asymptomatic individuals in Norway, 2015–2020

Einar Tollaksen Weme, Lin T. Brandal, Pål Arne Jenum, Astrid Louise Wester et autres

We aimed to estimate the prevalence of potentially diarrhoeagenic microbes (PDMs) in faecal samples from asymptomatic individuals in a high-income country, identify risk factors for carriage and to identify microbial factors that differ between PDMs in asymptomatic versus symptomatic individuals. Samples from …

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Development and implementation of a core genome multilocus sequence typing scheme for Yersinia enterocolitica: a tool for surveillance and outbreak detection

João Pires, Lin T. Brandal, Umaer Naseer

ABSTRACT Yersinia enterocolitica ( Y. enterocolitica ) is the most frequent etiological agent of yersiniosis and has been responsible for several national outbreaks in Norway and elsewhere. A standardized high-resolution method, such as core genome Multilocus Sequence Typing (cgMLST), is needed for …

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Comparative Genomics of Clinical Hybrid Escherichia Coli Strains in Norway

Bjørn-Arne Lindstedt, Misti D. Finton, Roger Meisal, Davide Porcellato et autres

Evolution of Bordetella pertussis in the acellular vaccine era in Norway, 1996 to 2019

Lin T. Brandal, Didrik Frimann Vestrheim, Torbjørn Bruvik, Ragnhild B. Roness et autres

We described the population structure of Bordetella pertussis (B. pertussis) in Norway from 1996 to 2019 and determined if there were evolutionary shifts and whether these correlated with changes in the childhood immunization program. We selected 180 B. pertussis isolates, 22 from …

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Comprehensive Contact Tracing, Testing and Sequencing Show Limited Transmission of SARS-CoV-2 between Children in Schools in Norway, August 2020 to May 2021

Brita Askeland Winje, Trine Skogset Ofitserova, Ola Brønstad Brynildsrud, Margrethe Greve‐Isdahl et autres

The role of children in the spread of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in schools has been a topic of controversy. In this study among school contacts of SARS-CoV-2 positive children in 43 contact-investigations, we investigated SARS-CoV-2 transmission in Norway, …

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