Comparison of Perceived Adverse Events After COVID-19 Vaccination Between Pregnant and NonPregnant Women Using Two Cohort Studies in the Netherlands.

Background: Maternal vaccines are upcoming. A clear picture of the adverse events (AEs) after maternal vaccination and whether this is comparable to a nonpregnant population is important. The objective of our study was to compare perceived AEs after COVID-19 vaccination between pregnant and nonpregnant women and to study if it is feasible to compare AEs within two independent Dutch cohort studies.