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Eurosurveillance, Volume 7, Issue 35, 28 August 2003
Articles

Citation style for this article: O'Brien S, Ward LR, Hampton M, Cowden J, Mather H, Brown DJ. Increase in Salmonella Bareilly in the United Kingdom. Euro Surveill. 2003;7(35):pii=2282. Available online: http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=2282

Increase in Salmonella Bareilly in the United Kingdom

Sarah O’Brien1 (sarah.obrien@hpa.org.uk), Linda Ward2, Mike Hampton2, John Cowden3, Henry Mather4, and Derek Brown4

1Health Protection Agency Communicable Disease Surveillance Centre, 2Health Protection Agency Laboratory of Enteric Pathogens, London, England; 3Scottish Centre for Infection and Environmental Health; 4Scottish Salmonella Reference Laboratory, Glasgow, Scotland

The Health Protection Agency’s Laboratory of Enteric Pathogens (LEP) in England and Wales, and the Scottish Salmonella Reference Laboratory (SSRL) in Scotland have confirmed a total of 60 cases of Salmonella Bareilly infection during August 2003 (to 28 August) (1). There are 41 widely distributed cases in England and Wales, and 19 in Scotland. The cases range in age from 1 to 93 years and the gender distribution is even. S. Bareilly infection might possibly have contributed to the death of one elderly lady in Scotland. Where known, the dates of onset for these cases range from 30 July to 12 August 2003 (Figure) and the epidemic curve is consistent with a continuing source.

Figure. Epidemic curve for cases of S. Bareilly in England, Wales and Scotland, July - August 2003 (N = 43)

S. Bareilly, which was first identified in India in 1928, is rarely isolated in the United Kingdom. In 2002, 38 cases were confirmed in England and Wales (two in Scotland) and more than half of them reported travel to the Indian subcontinent during the incubation period. Since 1995 the LEP has confirmed contamination of certain food items with S. Bareilly that include: prawns, spices (curry powder, chilli powder, coriander), coconut, raw fish, raw fish eggs, and yeast powder.

Plasmid analysis performed by the SSRL and the LEP has shown that the outbreak strain is characterised by a 2.9 kb plasmid. Pulsed field gel electrophoresis is also being undertaken in both laboratories and the results will be compared.

Reference:
  1. Health Protection Agency. National increase in Salmonella Bareilly. Commun Dis Rep CDR Wkly 2003; 13 (35): news. (http://www.phls.co.uk/publications/cdr/index.html)

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