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Volume 17, Number 5—May 2011
Research

Travel-related Dengue Virus Infection, the Netherlands, 2006–2007

Gijs G.G. BaatenComments to Author , Gerard J.B. Sonder, Hans L. Zaaijer, Tom van Gool, Joan A.P.C.M. Kint, and Anneke van den Hoek
Author affiliations: Author affiliations: Public Health Service, Amsterdam, the Netherlands (G.G.G. Baaten, G.J.B. Sonder, J.A.P.C.M. Kint, A. van den Hoek); Academic Medical Centre, Amsterdam (G.G.G. Baaten, G.J.B. Sonder, H.L. Zaaijer, T. van Gool, A. van den Hoek); National Coordination Centre for Traveller’s Health Advice, Amsterdam (G.G.G. Baaten, G.J.B. Sonder)

Main Article

Table 1

Characteristics of 1,207 persons who traveled from the Netherlands to dengue-endemic countries and who attended a travel clinic for pretravel health advice, October 1, 2006–September 30, 2007*

Characteristic Total, no. (%) Previous DENV
 Univariate analysis
 Multivariate analysis
No. PR, % PRR (95% CI) p value PRR (95% CI) p value
No. participants
 1,207 (100)
 78
 6.5
NA
Sex
M 521 (43) 29 5.6 1
F
 686 (57)
 49
 7.1
1.3 (0.81–2.1)
 0.27
Median age, y, IQR
 38, 29–51
 49, 35–59
1.04 (1.02–1.06)
 <0.0001
1.03 (1.01–1.05)
 0.003
Country of birth
Non–dengue-endemic country 1,118 (93) 40 3.6 1 1
Dengue-endemic country
 89 (7)
 38
 43
20.1 (11.9–34.0)
 <0.0001
14.4 (8.1–25.6)
 <0.0001
No. times previously traveled to a dengue-endemic country <0.0001 0.004
0–1 447 (37) 5 1.1 1 1
2–5 477 (40) 35 7.3 7.0 (2.7–18.0) <0.0001 5.0 (1.8–13.9) 0.002
>6
 283 (23)
 38
 13.4
13.7 (5.3–35.3)
 <0.0001
6.4 (2.1–19.2)
 0.001
Previous travel destinations
Not Asia 537 31 5.8 1
Asia 670 (56) 47 7.0 1.2 (0.77–2.0) 0.38
Not Latin America 661 22 3.3 1 1
Latin America 546 (45) 56 10.3 3.3 (2.0–5.5) <0.0001 1.6 (0.85–2.9) 0.15
Not Africa 679 41 6.0 1
Africa
 528 (48)
 37
 7.0
1.2 (0.74–1.9)
 0.50
Primary purpose of current travel <0.0001 0.001
Tourism 1,032 (86) 52 5.0 1 1
Work or education 99 (8) 8 8.1 1.7 (0.76–3.6) 0.20 1.3 (0.52–3.3) 0.57
Visit with friends and/or relatives
 76 (6)
 18
 23.7
5.8 (3.2–10.6)
 <0.0001
4.1 (2.0–8.5)
 <0.0001
Vaccination status
Not vaccinated for previous travel 888 (74) 46 5.2 1 1
Vaccinated for previous travel 319 (26) 32 10.0 2.0 (1.3–3.3) 0.003 1.0 (0.56–1.78) 0.99

*DENV, dengue virus; PR, prevalence rate; PRR, prevalence rate ratio; CI, confidence interval; NA, not applicable; IQR, interquartile range.

Main Article

Page created: August 08, 2011
Page updated: August 08, 2011
Page reviewed: August 08, 2011
The conclusions, findings, and opinions expressed by authors contributing to this journal do not necessarily reflect the official position of the U.S. Department of Health and Human Services, the Public Health Service, the Centers for Disease Control and Prevention, or the authors' affiliated institutions. Use of trade names is for identification only and does not imply endorsement by any of the groups named above.
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