[Prevalence of varicella zoster virus in pregnant patients].

The prevalence of IgG antibodies to varicella-zoster (VZ) virus was estimated by indirect immunofluorescence test in a sero-epidemiological study in 295 healthy pregnant women at the age of 17 to 36 years. 93.2% were considered to be seropositive and consequently protected against varicella. No antibodies to VZ virus were detected in 6.8%. Owing to the lacking protective antibodies the occurrence of maternal varicella has to be taken into account.