ArticleBMC pregnancy and childbirth2025
Impact of the COVID-19 pandemic on parvovirus B19 infection rates in pregnancy: is there a post-pandemic epidemic?
Article in BMC pregnancy and childbirth, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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Who cites it
2 citing papers in PubMed.
- Molecular and serologic analysis of linked blood donor and recipient samples to rule out transfusion-transmitted parvovirus B19 infection.Frontiers in public health · 2026Article
- Long-Term Retrospective Analysis of Parvovirus B19 Infections in Blood Donors (2012-2024): Significant Increase in Prevalence Following the SARS-CoV-2 Pandemic.Diagnostics (Basel, Switzerland) · 2025Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesImplemented public health measures to avoid the spread of SARS-CoV-2, influenced the circulation of various viral infections including parvovirus B19. Notably, pregnancies affected by parvovirus B19 have a high risk for severe fetal anemia and fetal demise. This study evaluates changes in parvovirus infection rates after the SARS-CoV-2 pandemic.
methodsThis was a retrospective cohort-study assessing the prevalence of parvovirus B19 among pregnant women at a tertiary referral center in Austria from January 2013 to December 2023 with particular interest in the influence of the COVID-19 pandemic on infection rates of parvovirus B19. Women who had PCR testing for parvovirus due to suspicion of infection were included in this study. To compare infection rates before, during, and after the pandemic, three study groups were defined in concordance with Austrian public health measures: A pre-pandemic group (Group 1) including all pregnant women who tested for parvovirus B19 from January 2013 to the beginning of the COVID-19 lockdown in March 2020, a pandemic group (Group 2) including all patients who had PCR testing during the COVID-19 lockdown and a post-pandemic group (Group 3) including all patients who had PCR testing from the end of the pandemic in April 2023 to December 2023.
resultsA total of 251 pregnant women who had PCR testing for parvovirus B19 during the study period were identified, including 27 women with a positive test result. In the pre-pandemic group (n = 141) 14 women had a positive test result, in the pandemic group (n = 83) 3 women tested positive and in the post-pandemic group (n = 27) 10 women tested positive. The overall prevalence of parvovirus B19 was 0.108, and annually, it varies from 0.000 in 2021 to 0.355 in 2023. Considering the predefined study groups, the highest prevalence was demonstrated in the post-pandemic group (0.370), whereas the lowest was in the pandemic group (0.036). In the pre-pandemic group, the prevalence was 0.099. Prevalence of the predefined study groups differed significantly (p ≤ 0.001).
conclusionThis study demonstrates a significant rise of parvovirus B19 infections among pregnant women after the COVID-19 pandemic indicating a major impact of the pandemic and associated public health measures on parvovirus B19 infection rates.
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