Methods
All women were systematically asked for COVID-19 symptoms on admittance
to the labour- and pregnancy ward of the AUMC, and were then screened
consecutively for SARS-CoV-2 by a PCR on a throat- and/or nasopharyngeal
swab [5]. If the PCR result was > 48 hours old, the PCR
was repeated. The Medical Ethics committee of the AUMC declared this
study exempt from their evaluation (W20_257).