Alliance for Pandemic Preparedness

August 6, 2020

Placental Barrier against COVID-19



  • Komine-Aizawa et al. performed a narrative review summarizing evidence from pathological examinations of placental tissues in mothers with COVID-19finding that these tissues are often infected with SARS-CoV-2 although fetuses are not always infected. They review potential mechanisms for SARS-CoV-2 vertical transmissionThe authors conclude that although placentas are susceptible to SARS-CoV-2 infection, they may partially protect fetuses. 

Komine-Aizawa et al. (July 25, 2020). Placental Barrier against COVID-19. Placenta.