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Varicella zoster virus infection occurs at a relatively young age in The Netherlands.

AbstractINTRODUCTION:
To date, there is no universal varicella vaccination in the Netherlands. We studied the seroprevalence of varicella zoster virus (VZV) specific antibodies and determinants for seropositivity among participants of a serosurveillance study, conducted in 2006/2007 among Dutch inhabitants 0-79 years of age.
MATERIALS AND METHODS:
Serological testing of 6386 blood samples for VZV was performed with a fluorescent bead-based multiplex immunoassay. Seroprevalence and geometric mean concentration (GMC) were weighted for age, sex, ethnicity, and urbanization rate to the total Dutch population. Determinants for VZV seropositivity were identified among children younger than 6 years of age using a logistic regression model.
RESULTS:
The overall seroprevalence of VZV specific antibodies in the Dutch population was 94.6% (95% CI: 93.2-96.0%). This seroprevalence increased rapidly with age: at 6 years of age, more than 95% were seropositive. Determinants associated with lower VZV seropositivity were: young age, first-generation non-Dutch ethnicity, and low frequency of attendance at a day care center or nursery school. The GMC increased with age and was lower for women than for men from the age of 20 years onwards.
CONCLUSIONS:
This study confirmed that VZV infection occurs at a younger age in the Netherlands compared to other countries, which might explain the low disease burden due to varicella. Introduction of universal varicella vaccination is not a foregone conclusion in the Netherlands. Changes in migration and day care usage will influence the age-specific risk on varicella and should therefore be monitored. Further research might elucidate the sex differences in VZV specific GMC.
AuthorsAlies van Lier, Gaby Smits, Liesbeth Mollema, Sandra Waaijenborg, Guy Berbers, Fiona van der Klis, Hein Boot, Jacco Wallinga, Hester de Melker
JournalVaccine (Vaccine) Vol. 31 Issue 44 Pg. 5127-33 (Oct 17 2013) ISSN: 1873-2518 [Electronic] Netherlands
PMID23973248 (Publication Type: Journal Article)
CopyrightCopyright © 2013 Elsevier Ltd. All rights reserved.
Chemical References
  • Antibodies, Viral
Topics
  • Adolescent
  • Adult
  • Age Distribution
  • Aged
  • Antibodies, Viral (blood)
  • Chickenpox (epidemiology)
  • Child
  • Child Day Care Centers (utilization)
  • Child, Preschool
  • Cross-Sectional Studies
  • Emigrants and Immigrants
  • Female
  • Humans
  • Infant
  • Infant, Newborn
  • Logistic Models
  • Male
  • Middle Aged
  • Netherlands (epidemiology)
  • Seroepidemiologic Studies
  • Sex Distribution
  • Young Adult

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