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Epidemiology, Biostatistics and Prevention Institute

Varicella seroprevalence in individuals with a negative or unknown varicella history – results from a large Travel Clinic in Switzerland between 2008 and 2015

In Switzerland, vaccination against varicella is not recommended in the basic immunisation schedule. However, for individuals aged 11-40 years who do not
have a reliable varicella history the Swiss Federal Office of Public Health recommends to either (i) vaccinate or to (ii) perform a serology and vaccinate those with a negative result. In the Travel Clinic of the University of Zurich the second strategy is followed.
In this study we retrospectively assess the overall percentage of individuals with varicella-specific antibodies despite a negative history and we examined the influence of age, number of siblings, order of siblings, age difference to siblings and nationality on varicella seropositivity.

Weiterführende Informationen


Christoph Hatz (Project Leader)

Silja Bühler

Susan de Crom-Beer

Michael Freuler