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Transplacental transmission of SARS-CoV-2 infection

Abstract : SARS-CoV-2 outbreak is the first pandemic of the century. SARS-CoV-2 infection is transmitted through droplets; other transmission routes are hypothesized but not confirmed. So far, it is unclear whether and how SARS-CoV-2 can be transmitted from the mother to the fetus. We demonstrate the transplacental transmission of SARS-CoV-2 in a neonate born to a mother infected in the last trimester and presenting with neurological compromise. The transmission is confirmed by comprehensive virological and pathological investigations. In detail, SARS-CoV-2 causes: (1) maternal viremia, (2) placental infection demonstrated by immunohistochemistry and very high viral load; placental inflammation, as shown by histological examination and immunohistochemistry, and (3) neonatal viremia following placental infection. The neonate is studied clinically, through imaging, and followed up. The neonate presented with neurological manifestations, similar to those described in adult patients.
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Submitted on : Thursday, July 30, 2020 - 10:03:03 AM
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Alexandre J Vivanti, Christelle Vauloup-Fellous, Sophie Prevot, Véronique Zupan, Cecile Suffee, et al.. Transplacental transmission of SARS-CoV-2 infection. Nature Communications, Nature Publishing Group, 2020, 11 (1), pp.3572. ⟨10.1038/s41467-020-17436-6⟩. ⟨inserm-02909184⟩



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