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Guillain-Barré syndrome and COVID-19 vaccination: a systematic review and meta-analysis.

Stefano CensiGiandomenico BisacciaSabina GallinaValentina TomassiniAntonino Uncini
Published in: Journal of neurology (2024)
Adenovirus-vectored vaccines showed a 2.4 times increased risk of GBS that was about seven times higher compared with mRNA-based vaccines. The decreased GBS risk associated with mRNA vaccines was possibly due to an elicited reduction of infections, including SARS-CoV-2, associated with GBS during the vaccination period. How adenovirus-vectored COVID-19 vaccines may trigger GBS is unclear and further studies should investigate the relationship between vaccine technologies and GBS risk.
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