Sources of Calicivirus Contamination in Foodborne Outbreaks in Denmark, 2005–2011—The Role of the Asymptomatic Food Handler

Franck, Kristina Træholt; Lisby, M.; Fonager, Jannik; Schultz, Anna Charlotte; Böttiger, Blenda; Villif, A.; Absalonsen, Helle; Ethelberg, Steen

doi:10.1093/infdis/jiu479

Cited by 58 publications

(45 citation statements)

References 35 publications

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“…Oysters were analyzed for norovirus ( 7 ), and the capsid region of the detected strains was sequenced ( 8 ). Samples A, B, and C contained norovirus GI, whereas all 4 samples (A–D) contained norovirus GII.…”

mentioning

confidence: 99%

Molecular Evidence of Oysters as Vehicle of Norovirus GII.P17-GII.17

Rasmussen¹,

Schultz

Uhrbrand

et al. 2016

Emerg. Infect. Dis.

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confidence: 99%

Molecular Evidence of Oysters as Vehicle of Norovirus GII.P17-GII.17

Rasmussen¹,

Schultz

Uhrbrand

et al. 2016

Emerg. Infect. Dis.

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“…Lack of adequate food samples made it impossible to verify the results by analysing food items. Some studies show that asymptomatic food handlers have high viral loads of sapovirus [6,13,16] and may pose potential risk of secondary transmission. Of 11 kitchen workers, three reported symptoms during the outbreak which coincided with the peak of the outbreak.…”

Section: Discussionmentioning

confidence: 99%

Investigation of a food-borne outbreak of gastroenteritis in a school canteen revealed a variant of sapovirus genogroup V not detected by standard PCR, Sollentuna, Sweden, 2016

et al. 2017

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A food-borne outbreak of gastroenteritis with more than 650 suspected cases occurred in April 2016 in Sollentuna, Sweden. It originated in a school kitchen serving a total of 2,700 meals daily. Initial microbiological testing (for Campylobacter, Salmonella, Shigella, Yersinia, Giardia, Cryptosporidium, Entamoeba histolytica, adeno-, astro-, noro-, rota- and sapovirus) of stool samples from 15 symptomatic cases was negative, despite a clinical presentation suggestive of calicivirus. Analyses of the findings from both the Sollentuna municipality environmental team and a web-based questionnaire suggested that the source of the outbreak was the salad buffet served on 20 April, although no specific food item could be identified. Subsequent electron microscopic examination of stool samples followed by whole genome sequencing revealed a variant of sapovirus genogroup V. The virus was not detected using standard PCR screening. This paper describes the epidemiological outbreak investigation and findings leading to the discovery.

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“…Causal relations can be revealed by cross-sectional, case-control, or retrospective cohort studies (Tables 1 [18–38] and 2 [13,39–51]). These analytical epidemiological methods are ideal for revealing the epidemiology of foodborne infectious diseases, regardless of the socioeconomic traits of the outbreak regions [4,52].…”

Section: Epidemiological Methodologymentioning

confidence: 99%

Foodborne Infectious Diseases Mediated by Inappropriate Infection Control in Food Service Businesses and Relevant Countermeasures in Korea

Park

You

Cho

et al. 2017

Osong Public Health Res Perspect

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ObjectivesThe objective of this review is to propose an appropriate course of action for improving the guidelines followed by food handlers for control of infection. For this purpose, previous epidemiological reports related to acute gastroenteritis in food service businesses mediated by food handlers were intensively analyzed.MethodsRelevant studies were identified in international databases. We selected eligible papers reporting foodborne infectious disease outbreaks. Among primary literature collection, the abstract of each article was investigated to find cases that absolutely identified a causative factor to be food handlers’ inappropriate infection control and the taxon of causative microbial agents by epidemiological methodologies. Information about the sites (type of food business) where the outbreaks occurred was investigated.ResultsA wide variety of causative microbial agents has been investigated, using several epidemiological methods. These agents have shown diverse propagation pathways based on their own molecular pathogenesis, physiology, taxonomy, and etiology.ConclusionDepending on etiology, transmission, propagation, and microbiological traits, we can predict the transmission characteristics of pathogens in food preparation areas. The infected food workers have a somewhat different ecological place in infection epidemiology as compared to the general population. However, the current Korean Food Safety Act cannot propose detailed guidelines. Therefore, different methodologies have to be made available to prevent further infections.

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Sources of Calicivirus Contamination in Foodborne Outbreaks in Denmark, 2005–2011—The Role of the Asymptomatic Food Handler

Abstract: Guidelines regarding exclusion of FHs where household members suffer from gastroenteritis could limit the number of outbreaks.

Cited by 58 publications

References 35 publications

Molecular Evidence of Oysters as Vehicle of Norovirus GII.P17-GII.17

Molecular Evidence of Oysters as Vehicle of Norovirus GII.P17-GII.17

Investigation of a food-borne outbreak of gastroenteritis in a school canteen revealed a variant of sapovirus genogroup V not detected by standard PCR, Sollentuna, Sweden, 2016

Foodborne Infectious Diseases Mediated by Inappropriate Infection Control in Food Service Businesses and Relevant Countermeasures in Korea

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