

@article {14091,
	title = {First general outbreak of {Verocytotoxin}-producing {Escherichia} coli {O}157 in {Denmark}.},
	journal = {Euro surveillance : bulletin Europ{\'e}en sur les maladies transmissibles = European communicable disease bulletin},
	volume = {11},
	number = {2},
	year = {2006},
	pages = {55{\textendash}8},
	abstract = {This report describes the first general outbreak of verocytotoxin-producing E. coli (VTEC) in Denmark. Twenty five patients, 18 children and seven adults, with culture-confirmed VTEC O157:H- infection and indistinguishable pulsed-field gel electrophoresis DNA profiles, were identified during a six month period from September 2003 to March 2004. The outbreak strain possessed the virulence genes: eae, vtx1 and vtx2c. All patients but one presented with diarrhoea; none developed haemolytic uraemic syndrome. The outbreak was restricted to Copenhagen and surrounding areas. A case-control study including 11 cases and 55 matched controls revealed an association between VTEC O157:H- infection and shopping in a specific supermarket chain in Copenhagen and surrounding area, matched odds ratio (OR): 8.7 (95\% confidence interval (CI): 1.1-71). After exclusion of three assumed secondary cases, only consumption of a particular kind of organic milk from a small dairy was associated with disease OR: 8.7 (95\% CI 1.6-48). Environmental and microbiological investigations at the suspected dairy did not confirm the presence of the outbreak strain, but the outbreak stopped once the dairy was closed and thoroughly cleaned.},
	issn = {1560-7917},
	url = {http://www.ncbi.nlm.nih.gov/pubmed/16525198},
	author = {Jensen, C and Ethelberg, S and Gervelmeyer, A and Nielsen, E M and Olsen, K E P and M{\o}lbak, K and Outbreak Investigation Team}
}
