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Ex vivo Culture of Human Placental Explants for the Study of Viral Transmission Across the Maternal-Fetal Interface
Published on: December 30, 2025
[Parvovirus B 19 infection during pregnancy]
I Mylonas1, S Gutsche, G Anton
1Frauenklinik München--Klinikum Innenstadt, Ludwig Maximilians Universität, München, Germany. ioannis.mylonas@med.uni-muenchen.de
Insights
Parvovirus B19, a virus targeting red blood cell precursors, causes erythema infectiosum in children. It can lead to various severe hematological and non-hematological complications in all age groups.
Area of Science:
- Virology
- Immunology
- Hematology
Context:
- Parvovirus B19 is a human pathogen belonging to the Parvoviridae family.
- It specifically infects erythroid precursor cells in the bone marrow.
- The virus is a common cause of childhood illness and has significant implications for pregnant women.
Purpose:
- To review the clinical manifestations and complications associated with Parvovirus B19 infection.
- To highlight the spectrum of hematological and non-hematological sequelae.
- To discuss the impact of intrauterine Parvovirus B19 infection on fetal development and pregnancy outcomes.
Summary:
- Parvovirus B19 causes erythema infectiosum (fifth disease) in children and can lead to aplastic crises, chronic anemia, and arthritis in adults.
- Intrauterine infection poses risks including hydrops fetalis, fetal death, and potential congenital anomalies, although teratogenicity is considered rare.
- While congenital malformations are possible, parvovirus B19's teratogenic effect is not definitively established, necessitating careful pregnancy monitoring.
Impact:
- Understanding the diverse clinical spectrum of Parvovirus B19 infection is crucial for timely diagnosis and management.
- Awareness of potential fetal complications guides obstetric care and monitoring during pregnancy.
- Ongoing research into vaccine development offers hope for future prevention strategies against Parvovirus B19.
Abstract:
The parvovirus B 19 is part of the family of the parvoviridae and shows a distinctive tropism for erythropoid precursor cells. The virus causes in children the erythema infectiosum (German measles). Meanwhile, parvovirus B 19 infections can be associated with a wide spectrum of hematological and non-hematological complications (e.g. liver failure, hepatitis, aplastic crises primarily in association with chronic hemolytic anaemias, chronic arthritis, arthralgia/arthritis, transient/persistent anaemias, vasculitis, glomerulonephritis). Intrauterine infections can lead to specific or permanent organ defects (e.g. heart anomalies, eye diseases, micrognathy, chronic anaemia, myocarditis, hepatitis, mekonium peritonitis and central nervous system anomalies). Parvovirus B 19 infections are also associated with hydrops fetalis and intrauterine death during pregnancy. A definite relation between fetal malformations and B 19 infection has not been accomplished yet. Pregnancies complicated by parvovirus B 19 infection should be followed for further exclusion of any teratogenic effect. Although congenital malformations after a parvovirus infection are possible, this phenomenon seems to be rare. An intrauterine therapy with packed red cells could be performed for hydrops fetalis and low haemoglobin concentration. Investigation for the development and clinical testing of an efficient vaccine against parvovirus B 19 is currently in progress.
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