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This fact brief was originally published as an experiment to test the concepts behind fact briefs.
Readers should be aware that while there is still a lot of useful information in fact briefs like this one, not all of them reflect Gigafact's current methods and standards for fact briefs. If you come across any that you feel are out of date, don't hesitate to contact us at support@gigafact.org.
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FACT BRIEF

Have cases of Guillain-Barré Syndrome been found in people shortly after receiving the COVID-19 vaccine?

By Lisa Freedland
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YES

Rare cases of Guillain-Barré Syndrome have been observed in people from 10 to 22 days after receiving the AstraZeneca COVID-19 vaccine.

A U.K. study found four cases. A report from India found seven. Facial weakness was a common symptom in these patients, despite typically arising in less than 20% of GBS cases.

With GBS, immune system damage results in muscle weakness and sometimes paralysis, often after a viral or bacterial infection. In 1976, a swine flu vaccine was confirmed to have increased risk of the disorder.

The AstraZeneca shot is not approved in the U.S. The U.S. alert system has received 279 reports of GBS following COVID-19 vaccinations: 59 after a Johnson & Johnson shot, 97 after the Pfizer-BioNTech shot and 121 after the Moderna shot.

A causal link has not been confirmed; some or all cases could be coincidences. U.S. authorities continue to recommend all the approved vaccines.

This fact brief is responsive to conversations such as this one.
Sources
Annals of Neurology Report from Kerala, India: Guillain-Barré Syndrome following Astra-Zeneca vaccine
Annals of Neurology Report from UK: Guillain-Barré Syndrome following Astra-Zeneca vaccine
Centers For Disease Control GBS (Guillain-Barré Syndrome) and vaccines
MedPage Today Unusual variant of Guillain-Barré Syndrome linked to COVID vaccines
Neurology Quelling public fears about Guillain-Barré Syndrome and COVID-19 vaccination
ABOUT THE CONTRIBUTOR
Gigafact
Between 2020 and 2022, under close editorial supervision, Gigafact contracted a group of freelance writers and editors to test the concepts for fact briefs and provide inputs to our software development process. We call this effort Gigafact Foundry. Over the course of these two years, Gigafact Foundry writers published over 1500 fact briefs in response to claims they found online. Their important work forms the basis of Gigafact formats and editorial guidelines, and is available to the public on Gigafact.org. Readers should be aware that while there is still a lot of relevant information to be found, not all fact briefs produced by Gigafact Foundry reflect Gigafact's current methods and standards for fact briefs. If you come across any that you feel are out of date and need to be looked at with fresh eyes, don't hesitate to contact us at support@gigafact.org.
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About fact briefs published on Gigafact
Fact briefs are short, credibly sourced summaries that offer “yes/no” answers in response to claims found online. They rely on publicly available, often primary source data and documents. Fact briefs are created by contributors to Gigafact —a nonprofit project looking to expand participation in fact-checking and protect the democratic process. See all fact briefs here.