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(118,160 posts)
Tue Feb 27, 2024, 12:19 AM Feb 27

Very rare Covid vaccine side-effects [View all]

Natasha May
Thu 22 Feb 2024 09.00 EST

Two new but exceptionally rare Covid-19 vaccine side effects – a neurological disorder and inflammation of the spinal cord – have been detected by researchers in the largest vaccine safety study to date.

The study of more than 99 million people from Australia, Argentina, Canada, Denmark, Finland, France, New Zealand and Scotland also confirmed how rare known vaccine complications are, with researchers confirming that the benefits of Covid-19 vaccines still “vastly outweigh the risks”.

Researchers working as part of the Global Vaccine Data Network used deidentified electronic healthcare data to compare the rates of 13 brain, blood and heart conditions in people after they received the Pfizer, Moderna or AstraZeneca vaccine with the rate that would be expected of those conditions in the population before the pandemic.

The study confirmed with a high level of accuracy known links between mRNA (Pfizer and Moderna) vaccines and the rare side-effects of myocarditis (inflammation of the heart muscle) and pericarditis (swelling of the thin sac covering the heart). It also confirmed Guillain-Barré syndrome (where the immune system attacks the nerves) and cerebral venous sinus thrombosis (a type of blood clot in the brain) as rare side effects linked to the AstraZeneca vaccine ...


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