Substantial increase in listeriosis, Denmark 2009

A Kvistholm Jensen; S Ethelberg; B Smith; E Møller Nielsen; J Larsson; K Mølbak; J J Christensen; M Kemp

doi:10.2807/ese.15.12.19522-en

Rapid communications Open Access

Like 0

Download

Substantial increase in listeriosis, Denmark 2009
A Kvistholm Jensen¹ , S Ethelberg^1,2 , B Smith¹ , E Møller Nielsen¹ , J Larsson¹ , K Mølbak² , J J Christensen¹ , M Kemp¹
View Affiliations Hide Affiliations

Affiliations: ¹ Department of Microbiological Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark ² Department of Epidemiology, Statens Serum Institut, Copenhagen, Denmark

Correspondence:
A Kvistholm Jensen
AKV ssi.dk
View Citation Hide Citation

Citation style for this article: Kvistholm Jensen A, Ethelberg S, Smith B, Møller Nielsen E, Larsson J, Mølbak K, Christensen J J, Kemp M. Substantial increase in listeriosis, Denmark 2009. Euro Surveill. 2010;15(12):pii=19522. https://doi.org/10.2807/ese.15.12.19522-en Received: 11 Mar 2010

Abstract

In 2009, 97 cases of listeriosis were reported in Denmark (1.8 per 100,000), a significant rise over the previous year. The increase was seen both in cases of bacteraemia and meningitis and affected mainly people aged 70 years and older. A foodborne outbreak of eight cases was identified by pulsed-field gel electrophoresis typing. No explanation has so far been found for the marked increase in incidence. An increasing trend has been observed since 2003 and possible explanations are discussed.