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BREAKING: Analysis of over 220K pregnancies in Israel during 2016- 2022 found that mRNA COVID-19 vaccination during gestational weeks 8-13 was associated with a higher-than-expected number of eventual fetal losses (miscarriages, abortions & stillbirths)! Pregnant women vaccinated with dose 1 during weeks 8-13 had nearly 3.9 (95% CI: [2.55-5.14]) additional fetal losses above expected per 100 pregnancies. Most of the excess fetal losses occurred after gestational week 20 and nearly half occurred after gestational week 25. In contrast, pregnant women vaccinated for influenza during weeks 8-27 exhibited a consistently lower-than-expected observed number of fetal losses, likely the result of healthy vaccinee bias. Women vaccinated for COVID-19 or influenza prior to pregnancy exhibited according-to-expected or lower-than-expected numbers of fetal losses. The study used innovative observed-to-expected methodology, where data from prior years were leveraged to determine the expected number of fetal losses based on the individual characteristics of the pregnant women who vaccinated and their week of vaccination.