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Surveillance and outbreak report Open Access
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Abstract

Following notification of a serovar Typhimurium gastroenteritis outbreak, we identified 82 cases linked to a restaurant with symptom onset from 12 February 2015 to 8 March 2016. Seventy-two cases had an isolate matching the nationally unique whole genome sequencing profile (single nucleotide polymorphism (SNP) address: 1.1.1.124.395.395). Interviews established exposure to the restaurant and subsequent case–control analysis identified an association with eating carvery buffet food (adjusted odds ratios (AOR): 20.9; 95% confidence interval (CI): 2.2 – ∞). Environmental inspections, food/water testing, and a food trace-back investigation were inconclusive. Repeated cycles of cleaning were undertaken, including hydrogen peroxide fogging, however, transmission continued. After 7 months of investigation, environmental swabbing identified 106 isolates from kitchen surfaces and restaurant drains matching the outbreak profile. We found structural faults with the drainage system and hypothesised that a reservoir of bacteria in drain biofilm and underfloor flooded areas may have sustained this outbreak. Ineffective drain water-traps (U-bends) may have also contributed by allowing transmission of contaminated aerosols into the kitchen environment. These findings suggest that routine swabbing of sink drain points and inspection of drainage systems should be considered in future outbreak scenarios.

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/content/10.2807/1560-7917.ES.2017.22.49.17-00037
2017-12-07
2024-11-22
http://instance.metastore.ingenta.com/content/10.2807/1560-7917.ES.2017.22.49.17-00037
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References

  1. Roberts JA, Cumberland P, Sockett PN, Wheeler J, Rodrigues LC, Sethi D, et al. Infectious Intestinal Disease Study Executive. The study of infectious intestinal disease in England: socio-economic impact. Epidemiol Infect. 2003;130(1):1-11.  https://doi.org/10.1017/S0950268802007690  PMID: 12613740 
  2. Tam CC, Rodrigues LC, Viviani L, Dodds JP, Evans MR, Hunter PR, et al. IID2 Study Executive Committee. Longitudinal study of infectious intestinal disease in the UK (IID2 study): incidence in the community and presenting to general practice. Gut. 2012;61(1):69-77.  https://doi.org/10.1136/gut.2011.238386  PMID: 21708822 
  3. Silva C, Calva E, Maloy S. One Health and Food-Borne Disease: Salmonella Transmission between Humans, Animals, and Plants. Microbiol Spectr. 2014;2(1):OH-0020-2013. 10.1128/microbiolspec.OH-0020-2013 PMID: 26082128 
  4. Holman EJ, Allen KS, Holguin JR, Torno M, Lachica M. A community outbreak of Salmonella enterica serotype Typhimurium associated with an asymptomatic food handler in two local restaurants. J Environ Health. 2014;77(2):18-20. PMID: 25226780 
  5. Ashton PM, Nair S, Peters TM, Bale JA, Powell DG, Painset A, et al. Salmonella Whole Genome Sequencing Implementation Group. Identification of Salmonella for public health surveillance using whole genome sequencing. PeerJ. 2016;4:e1752.  https://doi.org/10.7717/peerj.1752  PMID: 27069781 
  6. Ashton P, Nair S, Peters T, Tewolde R, Day M, Doumith M, et al. Revolutionising Public Health Reference Microbiology using Whole Genome Sequencing: Salmonella as an exemplar. bioRxiv. 2015.
  7. Brooks JT, Matyas BT, Fontana J, DeGroot MA, Beuchat LR, Hoekstra M, et al. An outbreak of Salmonella serotype Typhimurium infections with an unusually long incubation period. Foodborne Pathog Dis. 2012;9(3):245-8.  https://doi.org/10.1089/fpd.2011.0992  PMID: 22283668 
  8. Ethelberg S, Lisby M, Torpdahl M, Sørensen G, Neimann J, Rasmussen P, et al. Prolonged restaurant-associated outbreak of multidrug-resistant Salmonella Typhimurium among patients from several European countries. Clin Microbiol Infect. 2004;10(10):904-10.  https://doi.org/10.1111/j.1469-0691.2004.00990.x  PMID: 15373885 
  9. Ashton PM, Peters T, Ameh L, McAleer R, Petrie S, Nair S, et al. Whole Genome Sequencing for the Retrospective Investigation of an Outbreak of Salmonella Typhimurium DT 8. PLoS Curr. 2015;7:ecurrents.outbreaks.2c05a47d292f376afc5a6fcdd8a7a3b6.  https://doi.org/10.1371/currents.outbreaks.2c05a47d292f376afc5a6fcdd8a7a3b6  PMID: 25713745 
  10. Public Health England Microbiology Services. Detection and enumeration of bacteria in swabs and other environmental samples. Version 2. London: Public Health England; 2014.
  11. The Water Supply (Water Fittings) Regulations. 1999. Statutory Instrument: 1999 No. 1148 (1999). Available from: http://www.dwi.gov.uk/stakeholders/legislation/ws(fittings)regs1999.pdf
  12. Moore B, Perry EL, Chard ST. A survey by the sewage swab method of latent enteric infection in an urban area. J Hyg (Lond). 1952;50(2):137-56.  https://doi.org/10.1017/S0022172400019501  PMID: 14938529 
  13. Gormley M, Aspray TJ, Kelly DA, Rodriguez-Gil C. Pathogen cross-transmission via building sanitary plumbing systems in a full scale pilot test-rig. PLoS One. 2017;12(2):e0171556.  https://doi.org/10.1371/journal.pone.0171556  PMID: 28187135 
  14. Public Health England Microbiology Services. Detection of Salmonella species, Microbiology Services Food Water and Environmental Microbiology, Standard Method. Version 2. London: Public Health England; 2014.
  15. Coughlan LM, Cotter PD, Hill C, Alvarez-Ordóñez A. New Weapons to Fight Old Enemies: Novel Strategies for the (Bio)control of Bacterial Biofilms in the Food Industry. Front Microbiol. 2016;7:1641.  https://doi.org/10.3389/fmicb.2016.01641  PMID: 27803696 
  16. McKinney KR, Gong YY, Lewis TG. Environmental transmission of SARS at Amoy Gardens. J Environ Health. 2006;68(9):26-30, quiz 51-2. PMID: 16696450 
  17. Berrang ME, Meinersmann RJ, Frank JF, Ladely SR. Colonization of a newly constructed commercial chicken further processing plant with Listeria monocytogenes. J Food Prot. 2010;73(2):286-91.  https://doi.org/10.4315/0362-028X-73.2.286  PMID: 20132673 
  18. Vergara-López S, Domínguez MC, Conejo MC, Pascual Á, Rodríguez-Baño J. Wastewater drainage system as an occult reservoir in a protracted clonal outbreak due to metallo-β-lactamase-producing Klebsiella oxytoca. Clin Microbiol Infect. 2013;19(11):E490-8.  https://doi.org/10.1111/1469-0691.12288  PMID: 23829434 
  19. Hota S, Hirji Z, Stockton K, Lemieux C, Dedier H, Wolfaardt G, et al. Outbreak of multidrug-resistant Pseudomonas aeruginosa colonization and infection secondary to imperfect intensive care unit room design. Infect Control Hosp Epidemiol. 2009;30(1):25-33.  https://doi.org/10.1086/592700  PMID: 19046054 
  20. Sánchez-Vargas FM, Abu-El-Haija MA, Gómez-Duarte OG. Salmonella infections: an update on epidemiology, management, and prevention. Travel Med Infect Dis. 2011;9(6):263-77.  https://doi.org/10.1016/j.tmaid.2011.11.001  PMID: 22118951 
  21. Moffatt CRM, Combs BG, Mwanri L, Holland R, Delroy B, Cameron S, et al. An outbreak of Salmonella Typhimurium phage type 64 gastroenteritis linked to catered luncheons in Adelaide, South Australia, June 2005. Commun Dis Intell Q Rep. 2006;30(4):443-8. PMID: 17330386 
  22. Ethelberg S, Sørensen G, Kristensen B, Christensen K, Krusell L, Hempel-Jørgensen A, et al. Outbreak with multi-resistant Salmonella Typhimurium DT104 linked to carpaccio, Denmark, 2005. Epidemiol Infect. 2007;135(6):900-7.  https://doi.org/10.1017/S0950268807008047  PMID: 17335629 
  23. Silk BJ, Foltz JL, Ngamsnga K, Brown E, Muñoz MG, Hampton LM, et al. Legionnaires’ disease case-finding algorithm, attack rates, and risk factors during a residential outbreak among older adults: an environmental and cohort study. BMC Infect Dis. 2013;13(1):291.  https://doi.org/10.1186/1471-2334-13-291  PMID: 23806063 
  24. Ethelberg S, Lisby M, Torpdahl M, Sørensen G, Neimann J, Rasmussen P, et al. Prolonged restaurant-associated outbreak of multidrug-resistant Salmonella Typhimurium among patients from several European countries. Clin Microbiol Infect. 2004;10(10):904-10.  https://doi.org/10.1111/j.1469-0691.2004.00990.x  PMID: 15373885 
  25. Ailes E, Budge P, Shankar M, Collier S, Brinton W, Cronquist A, et al. Economic and health impacts associated with a Salmonella Typhimurium drinking water outbreak-Alamosa, CO, 2008. PLoS One. 2013;8(3):e57439.  https://doi.org/10.1371/journal.pone.0057439  PMID: 23526942 
  26. O’Reilly CE, Bowen AB, Perez NE, Sarisky JP, Shepherd CA, Miller MD, et al. Outbreak Working Group. A waterborne outbreak of gastroenteritis with multiple etiologies among resort island visitors and residents: Ohio, 2004. Clin Infect Dis. 2007;44(4):506-12.  https://doi.org/10.1086/511043  PMID: 17243052 
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