Outbreak of Salmonella enterica Goldcoast infection associated with whelk consumption, England, June to October 2013

Inns, Thomas; Beasley, Gillian; Lane, Christopher; Hopps, V; Peters, Tansy; Pathak, Kamal; Perez-Moreno, R; Adak, Goutam; Shankar, Ananda Giri

doi:10.2807/1560-7917.es2013.18.49.20654

Cited by 18 publications

(10 citation statements)

References 8 publications

(8 reference statements)

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“…No association between poultry (chicken and turkey) consumption and S. Chester infection could be identified, probably because chicken is widely consumed by the population (79% of the cases and 85% of the controls in our study) and due to the low power of our study. Poultry and seafood are very commonly implicated in Salmonella -related food-borne outbreaks [ 31 , 32 ]. Furthermore, seafood and chicken meat have been identified, along with beef, as products most involved in the spreading of Salmonella in Morocco [ 33 ].…”

Section: Discussionmentioning

confidence: 99%

Multinational outbreak of travel-related Salmonella Chester infections in Europe, summers 2014 and 2015

et al. 2017

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Between 2014 and 2015, the European Centre for Disease Prevention and Control was informed of an increase in numbers of Salmonellaenterica serotype Chester cases with travel to Morocco occurring in six European countries. Epidemiological and microbiological investigations were conducted. In addition to gathering information on the characteristics of cases from the different countries in 2014, the epidemiological investigation comprised a matched case–case study involving French patients with salmonellosis who travelled to Morocco that year. A univariate conditional logistic regression was performed to quantify associations. The microbiological study included a whole genome sequencing (WGS) analysis of clinical and non-human isolates of S. Chester of varied place and year of isolation. A total of 162 cases, mostly from France, followed by Belgium, the Netherlands, Spain, Denmark and Sweden were reported, including 86 (53%) women. The median age per country ranged from 3 to 38 years. Cases of S. Chester were more likely to have eaten in a restaurant and visited the coast of Morocco. The results of WGS showed five multilocus sequence types (ST), with 96 of 153 isolates analysed clustering into a tight group that corresponded to a novel ST, ST1954. Of these 96 isolates, 46 (48%) were derived from food or patients returning from Morocco and carried two types of plasmids containing either qnrS1 or qnrB19 genes. This European-wide outbreak associated with travel to Morocco was likely a multi-source outbreak with several food vehicles contaminated by multidrug-resistant S. Chester strains.

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Section: Discussionmentioning

confidence: 99%

Multinational outbreak of travel-related Salmonella Chester infections in Europe, summers 2014 and 2015

et al. 2017

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“…As a consequence improvements in trace-back investigations have since been implemented. These have been used successfully in more recent investigations [40][41][42].…”

Section: Methodological Considerationsmentioning

confidence: 99%

A large Great Britain-wide outbreak of STEC O157 phage type 8 linked to handling of raw leeks and potatoes

et al. 2015

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Between December 2010 and July 2011, 252 cases of STEC O157 PT8 stx1 + 2 infection were reported in England, Scotland and Wales. This was the largest outbreak of STEC reported in England and the second largest in the UK to date. Eighty cases were hospitalized, with two cases of haemolytic uraemic syndrome and one death reported. Routine investigative data were used to generate a hypothesis but the subsequent case-control study was inconclusive. A second, more detailed, hypothesis generation exercise identified consumption or handling of vegetables as a potential mode of transmission. A second case-control study demonstrated that cases were more likely than controls to live in households whose members handled or prepared leeks bought unwrapped [odds ratio (OR) 40, 95% confidence interval (CI) 2·08-769·4], and potatoes bought in sacks (OR 13·13, 95% CI 1·19-145·3). This appears to be the first outbreak of STEC O157 infection linked to the handling of leeks.

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“…If the 95% Confidence Interval of the aOR did not include 1, we inferred that this was the evidence of statistical significance. Given the large ORs typical of exposures leading to intestinal infectious disease outbreaks [5, 8, 21], we defined that ORs within the range from 0.3 to 3.0 were of limited practical importance; if the 95% Confidence Interval of the aOR did not include this range, we used this to infer evidence of practical importance.…”

Section: Methodsmentioning

confidence: 99%

“…In countries such as Australia and The Netherlands, nationally representative population databases and surveys are routinely used to support infectious disease surveillance [2, 3]. By contrast, current methods of control recruitment in England include case-nominated controls [4], systematic digit dialling [5] and convenience sampling [6]. In addition to being resource-intensive and subject to potential biases [7], these methods are often slow.…”

Section: Introductionmentioning

confidence: 99%

Are food exposures obtained through commercial market panels representative of the general population? Implications for outbreak investigations

et al. 2019

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Current methods of control recruitment for case-control studies can be slow (a particular issue for outbreak investigations), resource-intensive and subject to a range of biases. Commercial market panels are a potential source of rapidly recruited controls. Our study evaluated food exposure data from these panel controls, compared with an established reference dataset. Market panel data were collected from two companies using retrospective internet-based surveys; these were compared with reference data from the National Diet and Nutrition Survey (NDNS). We used logistic regression to calculate adjusted odds ratios to compare exposure to each of the 71 food items between the market panel and NDNS participants. We compared 2103 panel controls with 2696 reference participants. Adjusted for socio-demographic factors, exposure to 90% of foods was statistically different between both panels and the reference data. However, these differences were likely to be of limited practical importance for 89% of Panel A foods and 79% of Panel B foods. Market panel food exposures were comparable with reference data for common food exposures but more likely to be different for uncommon exposures. This approach should be considered for outbreak investigation, in conjunction with other considerations such as population at risk, timeliness of response and study resources.

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Outbreak of Salmonella enterica Goldcoast infection associated with whelk consumption, England, June to October 2013

Cited by 18 publications

References 8 publications

Multinational outbreak of travel-related Salmonella Chester infections in Europe, summers 2014 and 2015

Multinational outbreak of travel-related Salmonella Chester infections in Europe, summers 2014 and 2015

A large Great Britain-wide outbreak of STEC O157 phage type 8 linked to handling of raw leeks and potatoes

Are food exposures obtained through commercial market panels representative of the general population? Implications for outbreak investigations

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