"Guillain-Barré Syndrome (GBS)... is a rare immune system disorder that results in muscle weakness, pain or numbness, and, in more severe cases, paralysis...
Based on a careful scientific review of the available information, the GACVS [WHO Global Advisory Committee on Vaccine Safety] subcommittee came to the following conclusions and recommendations:
- Rare cases of GBS have been reported following vaccinations with adenovirus vector COVID-19 vaccines...
- More rigorous studies using alternative data sources and robust study designs, and comparison of vaccinated and unvaccinated populations would be needed, to fully assess the significance of these events."
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