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Outbreak of Salmonella Newport associated with internationally distributed raw goats’ milk cheese, France, 2018

E. Robinson 1, 2 M. Travanut 3 L. Fabre 4 S. Larréché 5 L. Ramelli 2 L. Pascal 2 A. Guinard 6 N. Vincent 7 C. Calba 7 L. Meurice 8 Ma. Le Thien 9 E. Fourgere 9 G. Jones 2 N. Fournet 2 A. Smith Palmer 10 D. Brown 11 Simon Le Hello 4 M. Pardos de la Gandara 4 François-Xavier Weill 4 N. Jourdan da Silva 2
1 European Programme for Intervention Epidemiology Training (EPIET)
2 Santé publique France
3 ARS-PACA - Agence Régionale de Santé Provence-Alpes-Côte d'Azur, Marseille, France
4 CNR-ESS - Centre National de Référence des Escherichia coli, Shigella et Salmonella - Bactéries pathogènes entériques
5 DGAL - Direction Générale de l'Alimentation
6 SpF-Occitanie - Santé Publique France, Occitanie, Toulouse, France
7 SpF-Ile de France - Santé publique France, Ile de France, Paris, France
8 SpF-Nouvelle-Aquitaine - Santé publique France, Nouvelle-Aquitaine, Bordeaux, France
9 SpF-Auverne-Rhône-Alpes - Santé publique France, Auvergne-Rhône-Alpes, Lyon, France
10 Health Protection Scotland
11 Scottish Microbiology Reference Laboratories
Abstract : Raw milk cheeses are commonly consumed in France and are also a common source of foodborne outbreaks (FBOs).Both a FBO surveillance system and a laboratory-based surveillance system aim to detect Salmonellaoutbreaks. In early August 2018 5 familial FBOs due to Salmonellaspp.were reported to a regional health authority. Investigation identified common exposure to a raw goats’ milk cheese, from which Salmonellaspp. were also isolated, leading to an international product recall. Three weeks later, on 22 August,a national increase in SalmonellaNewportST118 was detected through laboratory surveillance. Concomitantly isolates from the earlier familial clusters were confirmed as S. NewportST118. Interviews with a selection of the laboratory identified cases revealed exposure to the same cheese, including exposure to batches not included in the previous recall, leading to an expansion of the recall. The outbreak affected 153 cases, including 6 cases in Scotland. S. Newport was detected in the cheese and in milk of one of the producer’s goats. The difference in the two alerts generated by this outbreak highlight the timeliness of the FBO system and the precision of the laboratory-based surveillance system. It is also a reminder of the risks associated with raw milk cheeses.
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E. Robinson, M. Travanut, L. Fabre, S. Larréché, L. Ramelli, et al.. Outbreak of Salmonella Newport associated with internationally distributed raw goats’ milk cheese, France, 2018. Epidemiology and Infection, Cambridge University Press (CUP), 2020, pp.1-23. ⟨10.1017/S0950268820000904⟩. ⟨pasteur-02634733⟩

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