Pregnant women with coronavirus disease 2019 (Covid-19) are at increased risk for adverse outcomes, and Covid-19 vaccination is recommended during pregnancy

We performed a case–control study with data from Norwegian registries on first-trimester pregnancies, Covid-19 vaccination, background

Our study found no evidence of an increased risk for early pregnancy loss after Covid-19 vaccination and adds to the findings from other reports supporting Covid-19 vaccination during pregnancy.