According to a seroepidemiological study in Germany, the prevalence of VZV-specific IgG class an- tibodies in women of reproductive age is 96-97% and only 3-4% of women were found to be susceptible to varicella [1]. The average incidence of varicella in preg- nant women has been calculated as 0.7-3 per 1,000 pregnancies [2-4]. Information on a positive history of varicella correlates well with serological findings. However, VZV IgG can be detected in 85% of persons with negative history of varicella [5]. Although the clinical course of chickenpox is usually mild, varicella in pregnant women may occasionally lead to serious ma- ternal and fetal diseases