288. Assessment of sars-cov-2 vertical transmission: analysis of the 31 placentas from the PREG-COV study

Introduction: The vertical transmission of SARS-CoV-2 has not been proven, but several cases of positive newborns have been reported. However, the infection of the placenta by the virus has not been clearly shown yet. This study aims to detect SARS-CoV-2 in placentas collected from COVID19-positive mothers during pregnancy. Methods: The study was conducted in Saint-Luc University Hospital (Brussels, Belgium) with ethical approval and informed consent. Pregnant women tested who were tested positive by RT-PCR during their pregnancy and who delivered after 22 weeks of gestation were included.