Parvovirus b19 is human pathogen that has transplacental transmission and can cause fetal damage. During 2013–2014 in belarus in total 23 cases of non-immune hydrops fetalis were laboratory tested and in 7 (30.4%) of them parvovirus etiology was confirmed. Dna of parvovirus b19 was detected in blood serum samples of all 7 women and in blood or ascitic fluid samples of 5 from 6 tested newborn/foetus. specific igm antibodies were presented in 2 (28.6%) of 7 women and in none of 6 newborn/foetus. Positive level of igg to parvovirus b19 was detected in all women and only in 50% of their foetus. Data obtained confirmed an importance of comprehensive laboratory investigation for both woman and her foetus for the conformation of parvovirus etiology in non-immune hydrops fetalis. The most reliable laboratory test is detection of parvovirus b19 dna in different kinds of clinical samples.
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