An important and highly concerning study published early this year in the journal Microbiology & Infectious Diseases titled, “Covid-19 RNA Based Vaccines and the Risk of Prion Diseases,” addresses one of the many potential, unintended, adverse health effects of the experimental mRNA Covid-19 vaccines presently being deployed worldwide, namely, their possible induction of prion diseases, a category of highly fatal brain disorders.
Dr. J Bart Classen
Analysis of the Pfizer vaccine against COVID-19 identified two potential risk factors for inducing prion disease is humans. The RNA sequence in the vaccine  contains sequences believed to induce TDP-43 and FUS to aggregate in their prion based conformation leading to the development of common eurodegerative diseases.
Immunologist: Pfizer, Moderna Vaccines Could Cause Long-Term Chronic Illness – Children’s Health Defense
Back in 1999, leading U.S. Food and Drug Administration (FDA) official Dr. Peter Patriarca contended that modern advances in vaccine technology were rapidly “outpacing researchers’ ability to predict potential vaccine-related adverse events”. Patriarca mused that this could lead to “a situation of unforeseen and unpredictable vaccine outcomes”.