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COVID-19 vaccine and Guillain-Barré syndrome risk

The topic is about the risk of Guillain-Barré syndrome associated with COVID-19 vaccines, specifically adenovirus-vector vaccines compared to mRNA vaccines.

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Jan 21, 2026

What are the latest incidence rates for Guillain‑Barré syndrome after viral‑vector COVID vaccines?

A consistent signal across surveillance, cohort and systematic-review literature shows a small but measurable increase in Guillain–Barré syndrome (GBS) incidence following adenovirus‑vector (viral‑vec...