Challenges of investigating a large food-borne norovirus outbreak across all branches of a restaurant group in the United Kingdom, October 2016.

Autor: Morgan M; Health Protection, Public Health Wales NHS Trust, Cardiff, United Kingdom.; European Programme for Intervention Epidemiology Training, Stockholm, Sweden.; These authors share first authorship., Watts V; These authors share first authorship.; United Kingdom Field Epidemiology Training Programme, Public Health England, London, United Kingdom.; Field Service - Epidemiology, National Infection Service, Public Health England, Liverpool, United Kingdom., Allen D; Virus Reference Department, National Infection Service, Colindale, Public Health England, London, United Kingdom.; National Institute for Health Research Health Protection Research Unit in Gastrointestinal Infections, United Kingdom.; Department of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene & Tropical Medicine, London, United Kingdom., Curtis D; Field Service - Epidemiology, National Infection Service, Public Health England, London, United Kingdom., Kirolos A; Department of Public Health and Health Policy, NHS Lothian, Edinburgh, Scotland., Macdonald N; Field Service - Epidemiology, National Infection Service, Public Health England, London, United Kingdom., Maslen E; North East North Central London Health Protection Team, Public Health England, London, United Kingdom., Morgan D; Incidents & Resilience Team, Food Standards Agency, London, United Kingdom., Saei A; Statistics, Modelling & Economics Department, National Infection Service - Data & Analytical Sciences, Public Health England, London, United Kingdom., Sedgwick J; Field Service - Epidemiology, National Infection Service, Public Health England, London, United Kingdom., Stevenson J; Department of Public Health and Health Policy, NHS Lothian, Edinburgh, Scotland., Turbitt D; Public Health England London, Public Health England, London, United Kingdom., Vivancos R; Field Service - Epidemiology, National Infection Service, Public Health England, Liverpool, United Kingdom., Waugh C; Department of Public Health and Health Policy, NHS Lothian, Edinburgh, Scotland., Williams C; Health Protection, Public Health Wales NHS Trust, Cardiff, United Kingdom., Decraene V; Field Service - Epidemiology, National Infection Service, Public Health England, Liverpool, United Kingdom.
Jazyk: angličtina
Zdroj: Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin [Euro Surveill] 2019 May; Vol. 24 (18).
DOI: 10.2807/1560-7917.ES.2019.24.18.1800511
Abstrakt: During October and November 2016, over 1,000 customers and staff reported gastroenteritis after eating at all 23 branches of a restaurant group in the United Kingdom. The outbreak coincided with a new menu launch and norovirus was identified as the causative agent. We conducted four retrospective cohort studies; one among all restaurant staff and three in customers at four branches. We investigated the dishes consumed, reviewed recipes, interviewed chefs and inspected restaurants to identify common ingredients and preparation methods for implicated dishes. Investigations were complicated by three public health agencies concurrently conducting multiple analytical studies, the complex menu with many shared constituent ingredients and the high media attention. The likely source was a contaminated batch of a nationally distributed ingredient, but analytical studies were unable to implicate a single ingredient. The most likely vehicle was a new chipotle chilli product imported from outside the European Union, that was used uncooked in the implicated dishes. This outbreak exemplifies the possibility of rapid spread of infectious agents within a restaurant supply chain, following introduction of a contaminated ingredient. It underlines the importance of appropriate risk assessments and control measures being in place, particularly for new ingredients and ready-to-eat foods.
Databáze: MEDLINE
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