Comparative Analysis of Transplacental SARS-CoV-2 Antibody Transfer in Pregnancy Phenotypes With Pre-eclampsia and/or Small-for-gestational-age Infants.

We analyzed paired maternal and cord samples for anti-spike protein antibody levels from pregnant individuals who received at least 2 doses of an mRNA COVID-19 vaccine before delivery and who had diagnoses consistent with placental dysfunction including pre-eclampsia and/or small-for-gestational-age infants. Our findings reveal similar median maternal and cord antibody levels across all groups despite the presence of these pregnancy complications.