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Volume 14, Number 10—October 2008

Estimating Community Incidence of Salmonella, Campylobacter, and Shiga Toxin–producing Escherichia coli Infections, Australia

Gillian HallComments to Author , Keflemariam Yohannes, Jane Raupach, Niels Becker, and Martyn Kirk
Author affiliations: Australian National University, Acton, Australian Capital Territory, Australia (G. Hall); Department of Health and Ageing, Canberra, Australia (K. Yohannes, M. Kirk,); Department of Health, Adelaide, South Australia, Australia (J. Raupach); National Centre for Epidemiology and Population Health (G. Hall, N. Becker);

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Table 1

Data sources used to assess under-reporting of Salmonella, Campylobacter, and STEC infections, Australia, 2001–2005*

Information Data sources
Symptoms that predicted visiting a doctor and having stool tested (“predictor symptoms”) used to adjust calculations for severity of illness Australian National Gastroenteritis Survey (NGS) conducted across Australia during 2001 and 2002 (9)
Probability of a case-patient in the community visiting a doctor NGS
Probability of a case-patient seen by a doctor having stool tested NGS and unpublished reports of 2 surveys of GP treatment and management practices for gastroenteritis in 2003/2004 and 2005 in 2 Australian states (10,11)
Probability of correctly identifying Salmonella and Campylobacter in stool samples by laboratories Royal College of Pathologists Australasia, Quality Assurance Programs Pty Limited, Microbiology QAP Results, 2001 (12)
Probability of a positive result being reported to health authorities Discussions with OzFoodNet epidemiologists
Symptom profiles for reported cases of salmonellosis Unpublished case-control study data from the Hunter Public Health Unit, NSW Australia (1997–2000), and OzFoodNet sites (2000–2003)
Symptom profiles on reported cases of campylobacteriosis Unpublished case control study data from the Hunter Public Health Unit, NSW Australia (1997–2000), and OzFoodNet sites (2000–2003)
Information on reported cases of STEC, and laboratory sensitivity of detecting STEC from fecal samples Unpublished data from OzFoodNet study on STEC in South Australia, 2003–2005
Number of notifications of campylobacteriosis, salmonellosis, and STEC infection. National Notifiable Diseases Surveillance System (13)
Australian midyear population for 2005 Australian Bureau of Statistics (14)

*STEC, Shiga toxin–-producing Escherichia coli; GP, general practitioner; QAP, quality assurance program. Further details of how data were used are shown in the Technical Appendix

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  1. Gallay  A, Vaillant  V, Bouvet  P, Grimont  P, Desenclos  JC. How many foodborne outbreaks of Salmonella infection occurred in France in 1995? Application of the capture-recapture method to three surveillance systems. Am J Epidemiol. 2000;152:1717. DOIPubMedGoogle Scholar
  2. Henson  S. Estimating the incidence of foodborne Salmonella and the effectiveness of alternate control measures. In: Private strategies, public policies, and food system performance proceedings: the economics of reducing health risk from food. Washington: University of Connecticut; 1995. Regional Research Project NE-165.
  3. Chalker  RB, Blaser  MJ. A review of human salmonellosis: III. Magnitude of Salmonella infection in the United States. Rev Infect Dis. 1988;10:11124.PubMedGoogle Scholar
  4. Hall  G, Raupach  J, Yohannes  K. An estimate of under-reporting of foodborne notifiable diseases: Salmonella, Campylobacter, Shiga toxin–like Escherichia coli (STEC). Canberra (Australia): Australian National University; 2006. National Centre for Epidemiology and Population Health. Working Paper No. 52.
  5. Wheeler  JG, Sethi  D, Cowden  JM, Wall  PG, Rodrigues  LC, Tompkins  DS, Study of infectious intestinal disease in England: rates in the community, presenting to general practice, and reported to national surveillance. The Infectious Intestinal Disease Study Executive. BMJ. 1999;318:104650.PubMedGoogle Scholar
  6. Voetsch  AC, Van Gilder  TJ, Angulo  FJ, Farley  MM, Shallow  S, Marcus  R, FoodNet estimate of the burden of illness caused by nontyphoidal Salmonella infections in the United States. Clin Infect Dis. 2004;38(Suppl 3):S12734. DOIPubMedGoogle Scholar
  7. Tompkins  DS, Hudson  MJ, Smith  HR, Englin  RP, Wheeler  JG, Brett  MM, A study of infectious intestinal disease in England: microbiological findings in cases and controls. Commun Dis Public Health. 1999;2:10813.PubMedGoogle Scholar
  8. Cowden  JM. Foodborne infectious risks: do we need a wide system of data collection and survey? The lessons learned from the study of infectious intestinal disease in England. Rev Epidemiol Sante Publique. 2002;50:8992.PubMedGoogle Scholar
  9. Hall G and the OzFoodNet Working Group. Results from the National Gastroenteritis Survey 2001–2002. Canberra (Australia): Australian National University; 2004. National Centre for Epidemiology and Population Health. Working Paper No. 50.
  10. Lalor  K, Gregory  J. Survey of general practitioners in Victoria: patterns of stool testing. Melbourne (Australia): OzFoodNet; 2004. [cited 11 Sep 2008]. Available from
  11. Mwanni  L. A survey of general practitioners in South Australia: patterns of stool testing. 2005. Adelaide (Australia) OzFoodNet; 2004. [cited 11 Sep 2008]. Available from
  12. The Microbiology Quality Assurance Program. final statistics—2001. Sydney (Australia): Royal College of Pathologists Australasia, Quality Assurance Programs Pty Ltd; 2001.
  13. National Notifiable Disease Surveillance System. Canberra (Australia): Australian Government Department of Health and Ageing; 2006. [cited 2006 Jun]. Available from
  14. Australian Bureau of Statistics. Population by age and sex, Australian states and territories, Jun 2004. Canberra (Australia): The Bureau; 2004. ABS cat.3201.0. [cited 31 Aug 2004]. Available from
  15. Combs  BG, Raupach  JC, Kirk  MD. Surveillance of Shiga toxigenic Escherichia coli in Australia. Commun Dis Intell. 2005;29:36670.PubMedGoogle Scholar
  16. SPSS. 15.0 for Microsoft Windows. Chicago: SPSS Inc.; 2006.
  17. Paton  AW, Paton  JC. Detection and characterization of Shiga toxigenic Escherichia coli by using multiplex PCR assays for stx1, stx2, eaeA, enterohemorrhagic E. coli hlyA, rfbO111, and rfbO157. J Clin Microbiol. 1998;36:598602.PubMedGoogle Scholar
  18. Keskimäki  M, Eklund  M, Pesonen  H, Heiskanen  T, Siitonen  A. Study Group. EPEC, EAEC and STEC in stool specimens: prevalence and molecular epidemiology of isolates. Diagn Microbiol Infect Dis. 2001;40:1516. DOIPubMedGoogle Scholar
  19. Frenzen  PD, Riggs  TL, Buzby  JC, Breuer  T, Roberts  T, Voetsch  D, Salmonella cost estimate updated using FoodNet data. Food Review. 1999;22:105.
  20. Scallan  E, Majowicz  SE, Hall  G, Banerjee  A, Bowman  CL, Daly  L, Prevalence of diarrhoea in the community in Australia, Canada, Ireland, and the United States. Int J Epidemiol. 2005;34:45460. DOIPubMedGoogle Scholar
  21. Centers for Disease Control and Prevention. Salmonella surveillance: annual summary, 2004. Atlanta (GA): The Centers; 2005. [cited 2008 Aug 31]. Available from
  22. Hellard  ME, Sinclair  MI, Forbes  AB, Fairley  CK. A randomized, blinded, controlled trial investigating the gastrointestinal health effects of drinking water quality. Environ Health Perspect. 2001;109:77384. DOIPubMedGoogle Scholar

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