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Volume 22, Number 4—April 2016
Research

Molecular Typing and Epidemiology of Human Listeriosis Cases, Denmark, 2002–20121

Anne Kvistholm JensenComments to Author , Jonas T. Björkman, Steen Ethelberg, Kristoffer Kiil, Michael Kemp, and Eva Møller Nielsen
Author affiliations: Statens Serum Institut, Copenhagen, Denmark (A.K. Jensen, J.T. Björkman, S. Ethelberg, K. Kiil, E.M. Nielsen); University of Southern Denmark, Odense, Denmark (A.K. Jensen, M. Kemp); Odense University Hospital, Odense (M. Kemp)

Main Article

Table 1

Characteristics of reported cases of human listeriosis by year, Denmark, 2002–2012*

Year No. cases reported Incidence per 105 population Median patient age, y (range)† Infection type, no. (%)
CFR, %†
CNS BSI Pregnancy-associated Other‡
2002 28 0.52 69 (1–90) 6 (21) 18 (64) 1 (4) 3 (11) 26
2003 28 0.52 76 (23–95) 5 (18) 18 (64) 3 (11) 2 (7) 24
2004 41 0.76 74 (44–98) 5 (12) 31 (76) 4 (10) 1 (2) 27
2005 44 0.81 68 (23–95) 4 (9) 39 (89) 0 (0) 1 (2) 23
2006 58 1.07 70 (8–91) 13 (22) 43 (74) 2 (2) 0 (0) 20
2007 59 1.08 67 (19–96) 11 (19) 45 (76) 0 (0) 3 (5) 32
2008 55 1.00 70 (1–93) 4 (7) 45 (82) 1 (2) 5 (9) 33
2009 98 1.78 74 (44–98) 18 (18) 74 (76) 4 (4) 2 (2) 29
2010 61 1.10 75 (2–91) 15 (25) 40 (66) 6 (10) 0 (0) 40
2011 48 0.86 70 (2–96) 9 (19) 36 (75) 0 (0) 3 (6) 25
2012 50 0.90 74 (24–93) 15 (30) 30 (60) 2 (4) 3 (6) 17
Total 570 0.95 71 (1–98) 105 (18) 419 (74) 23 (4) 23 (4) 27

*BSI, blood stream infection; CFR, case-fatality rate; CNS, central nervous system.
†Calculated for non–pregnancy-associated cases only.
‡Includes peritonitis, pleuritis, arthritis, abscesses, and osteitis.

Main Article

1Preliminary results from this study were presented at the 18th International Symposium on Problems of Listeriosis (ISOPOL XVIII), September 19–22, 2013, Goa, India.

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Page updated: March 15, 2016
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