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Clinical isolates of spp. and spp. are notifiable in Switzerland. In 1995, replaced as the most frequently reported food-borne pathogen. We analysed notification data (1988–2013) for these two bacterial, gastrointestinal pathogens of public health importance in Switzerland. Notification rates were calculated using data for the average resident population. Between 1988 and 2013, notified campylobacteriosis cases doubled from 3,127 to 7,499, while case notifications decreased, from 4,291 to 1,267. Case notifications for both pathogens peaked during summer months. infections showed a distinct winter peak, particularly in the 2011/12, 2012/13 and 2013/14 winter seasons. case notifications showed more frequent infection in males than females in all but 20–24 year-olds. Among reported cases, patients’ average age increased for campylobacteriosis but not for salmonellosis. The inverse trends observed in case notifications for the two pathogens indicate an increase in campylobacteriosis cases. It appears unlikely that changes in patients’ health-seeking or physicians’ testing behaviour would affect and case notifications differently. The implementation of legal microbiological criteria for foodstuff was likely an effective means of controlling human salmonellosis. Such criteria should be decreed for creating incentives for producers to lower prevalence in poultry.


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  1. Schweizerischer Bundesrat [Swiss Federal Council]. Verordnung über die Meldung übertragbarer Krankheiten des Menschen (Melde-Verordnung) vom 13. Januar 1999 (Stand am 1. Januar 2014); SR 818.141.1. [Ordinance on disease notification of humans from 13 January 1999 (version from 1 January 2014)]. Bern: The Swiss Federal Council; 2014. German. Available from http://www.admin.ch/ch/d/sr/8/818.141.1.de.pdf
  2. Schweiger A, Markwalder K, Vogt M. Infektiöse Diarrhoe: Epidemiologie, Klinik und Diagnostik. [Infectious diarrhoea: epidemiology, symptoms and diagnostic.]. Schweiz Med Forum. 2005;5:714-23. German.
  3. Man SM. The clinical importance of emerging Campylobacter species. Nat Rev Gastroenterol Hepatol. 2011;8(12):669-85. Available from:  https://doi.org/10.1038/nrgastro.2011.191  PMID: 22025030 
  4. Braam HP. Campylobacter Enteritis. In: Heymann DL, editor. Control of Communicable Diseases Manual. 18th ed. Washington, DC: American Public Health Association; 2004. p. 81-4.
  5. Bless PJ, Schmutz C, Suter K, Jost M, Hattendorf J, Mäusezahl-Feuz M, et al. A tradition and an epidemic: determinants of the campylobacteriosis winter peak in Switzerland. Eur J Epidemiol. 2014;29(7):527-37. Available from:  https://doi.org/10.1007/s10654-014-9917-0  PMID: 24990236 
  6. Poropatich KO, Walker CL, Black RE. Quantifying the association between Campylobacter infection and Guillain-Barré syndrome: a systematic review. J Health Popul Nutr. 2010;28(6):545-52. Available from:  https://doi.org/10.3329/jhpn.v28i6.6602  PMID: 21261199 
  7. Barton Behravesh C, Jones TF, Vugia DJ, Long C, Marcus R, Smith K, et al. FoodNet Working Group. Deaths associated with bacterial pathogens transmitted commonly through food: foodborne diseases active surveillance network (FoodNet), 1996-2005. J Infect Dis. 2011;204(2):263-7. Available from:  https://doi.org/10.1093/infdis/jir263  PMID: 21673037 
  8. Christenson JC. Salmonella infections. Pediatr Rev. 2013;34(9):375-83. Available from:  https://doi.org/10.1542/pir.34-9-375  PMID: 24000341 
  9. Braam P. Salmonellosis. In: Heymann DL, editor. Control of Communicable Diseases Manual. 18th ed. Washington, DC: American Public Health Association; 2004. p. 469-73.
  10. Kothary MH, Babu US. Infective dose of foodborne pathogens in volunteers: A review. J Food Saf. 2001;21(1):49-68. Available from:  https://doi.org/10.1111/j.1745-4565.2001.tb00307.x 
  11. Teunis PF, Kasuga F, Fazil A, Ogden ID, Rotariu O, Strachan NJ. Dose-response modeling of Salmonella using outbreak data. Int J Food Microbiol. 2010;144(2):243-9. Available from:  https://doi.org/10.1016/j.ijfoodmicro.2010.09.026  PMID: 21036411 
  12. Schmid H, Baumgartner A. Foodborne outbreaks in Switzerland - Current statistics, future developments, practical guidelines for the investigation of outbreaks and a historical review. Bern: The Federal Office of Public Health; 2012.
  13. European Food Safety Authority (EFSA), European Centre for Disease Prevention and Control (ECDC). The European Union summary report on trends and sources of zoonoses, zoonotic agents and food-borne outbreaks in 2013. EFSA Journal.2015;13(1):3991.
  14. Bundesamt für Statistik (BFS). STAT-TAB: Die interaktive Statistikdatenbank. Neuchâtel: Federal Statistical Office; 2014 [Accessed 26 Nov 2014]. German. Available from: http://www.pxweb.bfs.admin.ch
  15. Janiec J, Evans MR, Thomas DR, Davies GH, Lewis H. Laboratory-based surveillance of Campylobacter and Salmonella infection and the importance of denominator data. Epidemiol Infect. 2012;140(11):2045-52. Available from:  https://doi.org/10.1017/S0950268811002822  PMID: 22217369 
  16. des Innern DED. Verordnung des EDI über die Meldung von Beobachtungen übertragbarer Krankheiten des Menschen vom 1. Dezember 2015 (Stand am 1. Januar 2016); SR 818.101.126. [Ordinance of the FDHA on the notification of observations on human communicable diseases from 1. December 2015 (version from 1 January 2016)]. Bern: Federal Department of Home Affairs; 2016. German. Available from: https://www.admin.ch/opc/de/classified-compilation/20151622/index.html
  17. Schielke A, Rosner BM, Stark K. Epidemiology of campylobacteriosis in Germany - insights from 10 years of surveillance. BMC Infect Dis. 2014;14(1):30. Available from:  https://doi.org/10.1186/1471-2334-14-30  PMID: 24422983 
  18. Nichols GL, Richardson JF, Sheppard SK, Lane C, Sarran C. Campylobacter epidemiology: a descriptive study reviewing 1 million cases in England and Wales between 1989 and 2011. BMJ Open. 2012;2(4):e001179. Available from:  https://doi.org/10.1136/bmjopen-2012-001179  PMID: 22798256 
  19. Mughini Gras L, Smid JH, Wagenaar JA, Koene MG, Havelaar AH, Friesema IH, et al. Increased risk for Campylobacter jejuni and C. coli infection of pet origin in dog owners and evidence for genetic association between strains causing infection in humans and their pets. Epidemiol Infect. 2013;141(12):2526-35. Available from:  https://doi.org/10.1017/S0950268813000356  PMID: 23445833 
  20. Gillespie IA, O’Brien SJ, Penman C, Tompkins D, Cowden J, Humphrey TJ. Demographic determinants for Campylobacter infection in England and Wales: implications for future epidemiological studies. Epidemiol Infect. 2008;136(12):1717-25. Available from:  https://doi.org/10.1017/S0950268808000319  PMID: 19000328 
  21. Bavishi C, Dupont HL. Systematic review: the use of proton pump inhibitors and increased susceptibility to enteric infection. Aliment Pharmacol Ther. 2011;34(11-12):1269-81. Available from:  https://doi.org/10.1111/j.1365-2036.2011.04874.x  PMID: 21999643 
  22. Brophy S, Jones KH, Rahman MA, Zhou SM, John A, Atkinson MD, et al. Incidence of Campylobacter and Salmonella infections following first prescription for PPI: a cohort study using routine data. Am J Gastroenterol. 2013;108(7):1094-100. Available from:  https://doi.org/10.1038/ajg.2013.30  PMID: 23588238 
  23. Bearth A, Cousin ME, Siegrist M. Poultry consumers’ behaviour, risk perception and knowledge related to campylobacteriosis and domestic food safety. Food Contr. 2014;44:166-76. Available from:  https://doi.org/10.1016/j.foodcont.2014.03.055 
  24. Kittl S, Heckel G, Korczak BM, Kuhnert P. Source attribution of human Campylobacter isolates by MLST and fla-typing and association of genotypes with quinolone resistance. PLoS One. 2013;8(11):e81796. Available from:  https://doi.org/10.1371/journal.pone.0081796  PMID: 24244747 
  25. Kittl S, Kuhnert P, Hächler H, Korczak BM. Comparison of genotypes and antibiotic resistance of Campylobacter jejuni isolated from humans and slaughtered chickens in Switzerland. J Appl Microbiol. 2011;110(2):513-20. Available from:  https://doi.org/10.1111/j.1365-2672.2010.04906.x  PMID: 21143711 
  26. Schorr D, Schmid H, Rieder HL, Baumgartner A, Vorkauf H, Burnens A. Risk factors for Campylobacter enteritis in Switzerland. Zentralbl Hyg Umweltmed. 1994;196(4):327-37. PMID: 7748438 
  27. Wei W, Schüpbach G, Held L. Time-series analysis of Campylobacter incidence in Switzerland. Epidemiol Infect. 2015;143(9):1982-9. Available from:  https://doi.org/10.1017/S0950268814002738  PMID: 25400006 
  28. Proviande - Die Branchenorganisation der Schweizer Fleischwirtschaft. Der Fleischmarkt im Überblick: Jährlicher Konsum 2013. [The meat market at a glance: Annual consumption 2013.] Bern: Proviande; 2014 [Accessed 19 Jan 2015]. German. Available from http://www.schweizerfleisch.ch/dienstleistungen/statistik/publikationen/fleischkonsum/
  29. Proviande WB. Infografik: Fleischkonsum in der Schweiz stagniert. [Info graphic: Meat consumption in Switzerland stagnates.] Bern: Landwirtschaftlicher Informationsdienst (LID); 2010 [Accessed 19 Jan 2015]. German. Available from: http://www.lid.ch/de/medien/mediendienst/archyear/2086/
  30. Schmid H, Burnens AP, Baumgartner A, Oberreich J. Risk factors for sporadic salmonellosis in Switzerland. Eur J Clin Microbiol Infect Dis. 1996;15(9):725-32. Available from:  https://doi.org/10.1007/BF01691959  PMID: 8922572 
  31. Lebensmittelbuch S. (SLMB) [Swiss Food Manual]. Kapitel 56 “Mikrobiologie und Hygiene” [chapter 56 “Microbiology and Hygiene“]. Bern: Federal Office of Public Health, 1969
  32. Das Eidgenössische Departement des Innern [Federal Department of Home Affairs]. Verordnung über die hygienisch-mikrobiologischen Anforderungen an Lebensmittel, Gebrauchs- und Verbrauchsgegenstände vom 14. September 1981; SR 817.024. [Ordinance on the hygienic and microbiological requirements for foodstuff, utility- and consumable articles from 14 September 1981]. Bern: Federal Department of Home Affairs; 1981. German.
  33. Das Eidgenössische Departement des Innern [Federal Department of Home Affairs]. Verordnung über die hygienisch-mikrobiologischen Anforderungen an Lebensmittel, Gebrauchsgegenstände, Räume, Einrichtungen und Personal vom 26. Juni 1995 (Stand am 1. Januar 1996); SR 817.051. [Ordinance on the hygienic and microbiological requirements for foodstuff, utilities, rooms, facilities and personnel from 26 June 1995 (version from 1 January 1996)]. Bern: Federal Department of Home Affairs; 1996. German.
  34. Das Eidgenössische Departement des Innern [Federal Department of Home Affairs]. Hygieneverordnung des EDI (HyV) vom 23. November 2005 (Stand am 12. Dezember 2006); SR 817.024.1. [Ordinance on food hygiene from 23 November 2005 (version from 12 December 2006)]. Bern: Federal Department of Home Affairs; 2006. German. Available from http://www.admin.ch/opc/de/classified-compilation/20050160/200701010000/817.024.1
  35. Das Eidgenössische Departement des Innern [Federal Department of Home Affairs]. Hygieneverordnung des EDI (HyV) vom 23. November 2005 (Stand am 1. Januar 2014); SR 817.024.1. [Ordinance on food hygiene from 23 November 2005 (version from 1 January 2014)]. Bern: Federal Department of Home Affairs; 2014. German. Available from: http://www.admin.ch/ch/d/sr/8/817.024.1.de.pdf
  36. Schmid H, Baumgartner A. Salmonella enterica serovar Enteritidis in Switzerland: recognition, development, and control of the epidemic. In: Saeed AM, Gast RK, Potter ME, Wall PG, editors. Salmonella enterica serovar Enteritidis in humans and animals - Epidemiology, pathogenesis, and control. Ames: Iowa State University Press; 1999.
  37. Kaufmann-Bart M, Hoop RK. Diseases in chicks and laying hens during the first 12 years after battery cages were banned in Switzerland. Vet Rec. 2009;164(7):203-7. Available from:  https://doi.org/10.1136/vr.164.7.203  PMID: 19218590 
  38. Bundesamt für Lebensmittelsicherheit und Veterinärwesen BLV [Federal Food Safety and Veterinary Office, FSVO]. Switzerland – Trends and sources of zoonoses and zoonotic agents in humans, foodstuffs, animals and feedingstuffs – in 2013. Report to the European Commission. Bern: FSVO; 2014. Available from: http://www.blv.admin.ch/dokumentation/00327/04538/04815/index.html?lang=de
  39. Baumgartner A, Heimann P, Schmid H, Liniger M, Simmen A. Salmonella contamination of poultry carcasses and human salmonellosis. Arch Lebensm Hyg.1992;43:123-4.
  40. Much P, Rendi-Wagner P, Herzog U. Bericht über Zoonosen und ihre Erreger in Österreich im Jahr 2013. [Report on zoonoses and zoonotic pathogens in Austria in 2013.] Vienna: Bundesministerium für Gesundheit, AGES – Österreichische Agentur für Gesundheit und Ernährungssicherheit GmbH; 2014. German. Available from: http://www.ages.at/fileadmin/AGES2015/Themen/Krankheitserreger_Dateien/Zoonosen/Zoonosenbericht_2013.pdf
  41. Schmid H, Baumgartner A. Epidemiology of infections with enteric salmonellae in Switzerland with particular consideration of travelling activities. Swiss Med Wkly. 2013;143:w13842. PMID: 23986302 
  42. Coop, Schweizerische Gesellschaft für Ernährung. Ess-Trends im Fokus 6 – “Essen? Aber sicher!” [Dining trends in focus 5: ‘Hungry? Eat, but safely!’] Basel: Coop; 2011. German. Available from: http://www.coop.ch/pb/site/common2/node/79912766/Lde/index.html
  43. Bearth A, Cousin ME, Siegrist M. Uninvited guests at the table - a consumer intervention for safe poultry preparation. J Food Saf. 2013;33(4):394-404. Available from:  https://doi.org/10.1111/jfs.12063 
  44. Nagel GM, Bauermeister LJ, Bratcher CL, Singh M, McKee SR. Salmonella and Campylobacter reduction and quality characteristics of poultry carcasses treated with various antimicrobials in a post-chill immersion tank. Int J Food Microbiol. 2013;165(3):281-6. Available from:  https://doi.org/10.1016/j.ijfoodmicro.2013.05.016  PMID: 23800739 

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