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As of this article’s publication, the COVID-19 vaccine manufactured by Pfizer-BioNTech has not been shown to cause Prion diseases or neurodegenerative diseases such as Alzheimer’s and Lou Gehrig’s disease (ALS). Experts say a paper circulating online does not provide legitimate evidence otherwise.
In late April 2021, conservative outlets such as The Gateway Pundit (here) and National File (here) published stories on a paper linking Pfizer’s vaccine for the novel coronavirus to neurodegenerative diseases. Facebook posts sharing screenshots from these outlets can be seen here and here .
Titled “COVID-19 RNA Based Vaccines and the Risk of Prion Disease,” the paper in question, published in a journal called ‘Microbiology and Infectious Diseases’ in January, was authored by “J. Bart Classen, MD.”