Volume 22, Number 4—April 2016
Research
Molecular Typing and Epidemiology of Human Listeriosis Cases, Denmark, 2002–20121
Anne Kvistholm Jensen
, Jonas T. Björkman, Steen Ethelberg, Kristoffer Kiil, Michael Kemp, and Eva Møller Nielsen
, Jonas T. Björkman, Steen Ethelberg, Kristoffer Kiil, Michael Kemp, and Eva Møller Nielsen
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.
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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