Volume 20, Number 4—April 2014
Research
Epidemic of Mumps among Vaccinated Persons, the Netherlands, 2009–2012
Jussi Sane
, Sigrid Gouma, Marion Koopmans, Hester de Melker, Corien Swaan, Rob van Binnendijk, and Susan Hahné
, Sigrid Gouma, Marion Koopmans, Hester de Melker, Corien Swaan, Rob van Binnendijk, and Susan Hahné
Table 2
Demographic characteristics and student status for 1,557 patients with mumps, by annual epidemic season, the Netherlands, September 1, 2009–August 31, 2012*
| Characteristic | No. (%) case-patients |
||
|---|---|---|---|
| Season 1, 2009 Sep 1–2010 Aug 31, n = 359 | Season 2, 2010 Sep 1–2011 Aug 31, n = 689 | Season 3, 2011 Sep 1–2012 Aug 31, n = 509 | |
| Sex | |||
| M | 205 (57.1) | 416 (60.4) | 296 (58.2) |
| F | 154 (42.9) | 271 (39.3) | 213 (41.8) |
| Unknown | 0 | 2 (0.3) | 0 |
| Age, y | |||
| 0–3 | 3 (0.8) | 4 (0.6) | 3 (0.6) |
| 4–12 | 5 (1.4) | 22 (3.2) | 16 (3.1) |
| 13–17 | 17 (4.7) | 63 (9.1) | 54 (10.6) |
| 18–25 | 270 (75.2) | 468 (67.9) | 318 (62.4) |
| >25 | 64 (17.8) | 131 (19) | 118 (23.2) |
| Unknown | 0 | 1 (0.2) | 0 |
| Vaccination status | |||
| 0 doses | 57 (15.9) | 115 (16.7) | 70 (13.7) |
| 1 dose | 37 (10.3) | 69 (10.0) | 51 (10.0) |
| 2 doses | 225 (62.7) | 436 (63.3) | 337 (66.2) |
| >3 doses | 4 (1.1) | 4 (0.6) | 5 (1.0) |
| Vaccinated but unknown no. doses | 24 (6.7) | 25 (3.6) | 15 (3.0) |
| Unknown | 12 (3.3) | 40 (5.8) | 31 (6.1) |
| Residence in a city with university† | |||
| Yes | 258 (71.9) | 351 (50.9) | 243 (47.7) |
| No | 92 (25.6) | 322 (46.7) | 263 (51.7) |
| Unknown | 9 (2.5) | 16 (2.3) | 3 (0.6) |
| Student/contact with students | |||
| Not a student and no contact with students | 22 (6.1) | 171 (24.8) | 118 (23.2) |
| University student or contact with university students | 229 (63.8) | 275 (39.9) | 221 (43.4) |
| Other student‡ or contact with other students | 20 (5.6) | 144 (20.9) | 88 (17.3) |
| Unknown | 88 (24.5) | 99 (14.4) | 82 (16.1) |
| Incidence estimates§ | |||
| University students | 92.9 | 93.9 | 80.2 |
| Other students | 2.0 | 14.7 | 9.8 |
| Secondary school students | 0 | 0.7 | 5.4 |
*Boldface indicates significance trends by χ2 test, calculated by using proportions excluding unknowns.
†University cities: Amsterdam, Delft, Eindhoven, Enschede, Groningen, Leiden, Maastricht, Nijmegen, Rotterdam, Stichtse Vecht, Tilburg, Utrecht, and Wageningen.
‡Students enrolled in higher education other than university.
§Incidence per 100,000 students. Total student numbers by category obtained from www.cbs.nl.
Page created: March 12, 2014
Page updated: March 12, 2014
Page reviewed: March 12, 2014
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