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Recurrent multistate outbreak of Salmonella Newport associated with tomatoes from contaminated fields, 2005

  • S. K. GREENE (a1) (a2), E. R. DALY (a3), E. A. TALBOT (a3) (a4), L. J. DEMMA (a1) (a5), S. HOLZBAUER (a1) (a5), N. J. PATEL (a1), T. A. HILL (a6), M. O. WALDERHAUG (a6), R. M. HOEKSTRA (a1), M. F. LYNCH (a1) and J. A. PAINTER (a1)...
Abstract
SUMMARY

Salmonella Newport causes more than an estimated 100 000 infections annually in the United States. In 2002, tomatoes grown and packed on the eastern shore of Virginia contaminated with a pan-susceptible S. Newport strain caused illness in 510 patients in 26 states. In July–November 2005, the same strain caused illness in at least 72 patients in 16 states. We conducted a case-control study during the 2005 outbreak, enrolling 29 cases and 140 matched neighbourhood controls. Infection was associated with eating tomatoes (matched odds ratio 9·7, 95% confidence interval 3·3–34·9). Tomatoes were traced back to the eastern shore of Virginia, where the outbreak strain was isolated from pond water used to irrigate tomato fields. Two multistate outbreaks caused by one rare strain, and identification of that strain in irrigation ponds 2 years apart, suggest persistent contamination of tomato fields. Further efforts are needed to prevent produce contamination on farms and throughout the food supply chain.

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Corresponding author
*Author for correspondence: Dr S. K. Greene, Enteric Diseases Epidemiology Branch, Centers for Disease Control and Prevention, 1600 Clifton Rd., MS D-63, Atlanta, GA 30333, USA. (Email: SGreene1@cdc.gov)
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1. AC Voetsch , FoodNet estimate of the burden of illness caused by nontyphoidal Salmonella infections in the United States. Clinical Infectious Diseases 2004; 38: S127134.

5. O Lyytikainen , Molecular epidemiology of an outbreak caused by Salmonella enterica serovar Newport in Finland and the United Kingdom. Epidemiology and Infection 2000; 124: 185192.

7. JP Narain , JP Lofgren . Epidemic of restaurant-associated illness due to Salmonella Newport. Southern Medical Journal 1989; 82: 837840.

8. JS Spika , Chloramphenicol-resistant Salmonella Newport traced through hamburger to dairy farms. A major persisting source of human salmonellosis in California. New England Journal of Medicine 1987; 316: 565570.

9. SD Holmberg , Drug-resistant Salmonella from animals fed antimicrobials. New England Journal of Medicine 1984; 311: 617622.

10. LW Riley , Evaluation of isolated cases of salmonellosis by plasmid profile analysis: introduction and transmission of a bacterial clone by precooked roast beef. Journal of Infectious Diseases 1983; 148: 1217.

14. S Sivapalasingam , A multistate outbreak of Salmonella enterica serotype Newport infection linked to mango consumption: impact of water-dip disinfestation technology. Clinical Infectious Diseases 2003; 37: 15851590.

16. CA Van Beneden , Multinational outbreak of Salmonella enterica serotype Newport infections due to contaminated alfalfa sprouts. Journal of the American Medical Association 1999; 281: 158162.

17. B Swaminathan , PulseNet: the molecular subtyping network for foodborne bacterial disease surveillance, United States. Emerging Infectious Diseases 2001; 7: 382389.

21. CW Hedberg , Outbreaks of salmonellosis associated with eating uncooked tomatoes: implications for public health. Epidemiology and Infection 1999; 122: 385393.

22. K Cummings , A multistate outbreak of Salmonella enterica serotype Baildon associated with domestic raw tomatoes. Emerging Infectious Diseases 2001; 7: 10461048.

34. SB Hunter , Establishment of a universal size standard strain for use with the PulseNet standardized pulsed-field gel electrophoresis protocols: converting the national databases to the new size standard. Journal of Clinical Microbiology 2005; 43: 10451050.

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Epidemiology & Infection
  • ISSN: 0950-2688
  • EISSN: 1469-4409
  • URL: /core/journals/epidemiology-and-infection
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