Countrywide multi-serotype outbreak of Salmonella Bovismorbificans ST142 and monophasic Salmonella Typhimurium ST34 associated with dried pork sausages in France, September 2020* to January 2021

Author:

Pardos de la Gandara Maria1ORCID,Fournet Nelly2,Bonifait Laetitia3ORCID,Lefèvre Sophie1ORCID,Chemaly Marianne3ORCID,Grastilleur Charlotte4,Cadel-Six Sabrina5ORCID,Fach Patrick6ORCID,Pignault Agnès4,Brisabois Anne7ORCID,Jourdan-Da Silva Nathalie2ORCID,Weill François-Xavier1ORCID

Affiliation:

1. Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Centre National de Référence des Escherichia coli, Shigella et Salmonella, Paris, France

2. Santé publique France, Saint Maurice, France

3. ANSES, Ploufragan-Plouzané-Niort Laboratory, Unit of Hygiene and Quality of Poultry and Pork Products, Ploufragan, France

4. Mission des Urgences Sanitaires, Direction générale de l’alimentation, Paris, France

5. ANSES, Laboratory for Food Safety, Salmonella and Listeria Unit, Maisons-Alfort, France

6. ANSES, Laboratory for Food Safety, IdentyPath Genomics Platform, Maisons-Alfort, France

7. ANSES, Strategy and Programs Department, Research and Reference Division, Maisons-Alfort, France

Abstract

The French National Reference Centre for Escherichia coli, Shigella and Salmonella (FNRC-ESS) detected two human clusters of 33 cases (median age: 10 years; 17 females) infected by Salmonella enterica serotype Bovismorbificans, ST142, HC5_243255 (EnteroBase HierCC‑cgMLST scheme) in September–November 2020 and of 11 cases (median age: 11 years; seven males) infected by S. enterica serotype 4,12:i:-, ST34, HC5_198125 in October–December 2020. Epidemiological investigations conducted by Santé publique France linked these outbreaks to the consumption of dried pork sausages from the same manufacturer. S. Bovismorbificans and S. 4,12:i:- were isolated by the National Reference Laboratory from different food samples, but both strains were identified in a single food sample only by qPCR. Three recalls and withdrawals of dried pork products were issued by the French general directorate of food of the French ministry for agriculture and food in November 2020, affecting eight supermarket chains. A notification on the European Rapid Alert System for Food and Feed and a European urgent enquiry on the Epidemic Intelligence Information System for Food and Waterborne Diseases and Zoonoses (EPIS-FWD) were launched. No cases were reported outside France. Outbreaks caused by multiple serotypes of Salmonella may go undetected by protocols in standard procedures in microbiology laboratories.

Publisher

European Centre for Disease Control and Prevention (ECDC)

Subject

Virology,Public Health, Environmental and Occupational Health,Epidemiology

Reference35 articles.

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2. The European Union One Health 2019 Zoonoses Report.;EFSA J,2021

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4. Estimation de la morbidité et de la mortalité liées aux infections d’origine alimentaire en France métropolitaine, 2008-2013.;Van Cauteren;Bull Epidemiol Hebd (Paris),2018

5. Salmonella in the pork production chain and its impact on human health in the European Union.;Bonardi;Epidemiol Infect,2017

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