Association of COVID-19 vaccination before 12 weeks of gestation with ultrasound-detected congenital anomalies compared with later or no vaccination: A registry-based cohort study
Seyed-Abdolvahab Taghavi, Fatemeh Bazarganipour, Mohammad Moradi-Joo, Zahra Seyedi, Fatemeh Dabiri, Leila Bozorgian, Leila Manzori · 2026
Read Association of COVID-19 vaccination before 12 weeks of gestation with ultrasound-detected congenital anomalies compared with later or no vaccination: A registry-based cohort study by Seyed-Abdolvahab Taghavi, Fatemeh Bazarganipour, Mohammad Moradi-Joo, Zahra Seyedi, Fatemeh Dabiri, Leila Bozorgian, Leila Manzori (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13269975.txt.
Description
Seyed-Abdolvahab Taghavi and co-authors published a registry study in 2026 on COVID-19 vaccination in early pregnancy and birth defects seen on ultrasound. Registries in two Iranian cities split women into three groups: vaccinated before 12 weeks, vaccinated later, or unvaccinated. The early window is when organs form, so safety questions focus there.
Most defects were rare and occurred at very low rates in all groups. One heart defect type appeared somewhat more often after early vaccination, with an effect measure of 0.22. Cleft palate also rose slightly, at 0.13. Every other defect showed small effects with no meaningful differences. Event numbers were low and the analysis exploratory, so the authors make no causal claims.
Catalog record
| CREATOR | Seyed-Abdolvahab Taghavi, Fatemeh Bazarganipour, Mohammad Moradi-Joo, Zahra Seyedi, Fatemeh Dabiri, Leila Bozorgian, Leila Manzori |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 44420 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |