In order to assess the proportion of women in fertile age who lack antibodies against parvovirus B19 the authors assessed in 2 groups of sera (63 and 40 sera) taken from 17–34-year-old women antibodies against this virus by the ELISA method (Seiken). Virus-specific antibodies, class IgG were detected only in 67% of the examined subjects which indicates that in one third of the women there is a risk of transplacental infection of the foetus in case of infection with the parvovirus B19 during pregnancy.

        Key words: parvovirus B19 – risk of transplacental transmission.