Analysis of the FoodNet case-control study of sporadic Salmonella serotype Enteritidis infections using persons infected with other Salmonella serotypes as the comparison group

A. C. Voetsch, C. Poole, Craig W Hedberg, R. M. Hoekstra, R. W. Ryder, D. J. Weber, F. J. Angulo

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Use of well persons as the comparison group for laboratory-confirmed cases of sporadic salmonellosis may introduce ascertainment bias into case-control studies. Data from the 1996-1997 FoodNet case-control study of laboratory-confirmed Salmonella serogroups B and D infection were used to estimate the effect of specific behaviours and foods on infection with Salmonella serotype Enteritidis (SE). Persons with laboratory-confirmed Salmonella of other serotypes acted as the comparison group. The analysis included 173 SE cases and 268 non-SE controls. SE was associated with international travel, consumption of chicken prepared outside the home, and consumption of undercooked eggs prepared outside the home in the 5 days prior to diarrhoea onset. SE phage type 4 was associated with international travel and consumption of undercooked eggs prepared outside the home. The use of ill controls can be a useful tool in identifying risk factors for sporadic cases of Salmonella.

Original languageEnglish (US)
Pages (from-to)408-416
Number of pages9
JournalEpidemiology and infection
Volume137
Issue number3
DOIs
StatePublished - Sep 11 2009

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Salmonella enteritidis
Salmonella
Case-Control Studies
Infection
Eggs
Salmonella Infections
Bacteriophages
Serogroup
Chickens
Diarrhea
Food

Keywords

  • Case-control studies
  • Epidemiological methods
  • Salmonella infections

Cite this

Analysis of the FoodNet case-control study of sporadic Salmonella serotype Enteritidis infections using persons infected with other Salmonella serotypes as the comparison group. / Voetsch, A. C.; Poole, C.; Hedberg, Craig W; Hoekstra, R. M.; Ryder, R. W.; Weber, D. J.; Angulo, F. J.

In: Epidemiology and infection, Vol. 137, No. 3, 11.09.2009, p. 408-416.

Research output: Contribution to journalArticle

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