Nanoparticles are capable of entering the brain

https://www.pnas.org/content/117/32/19141
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8032477/

This needs to be seen as well: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4516275/
Dr. Ardis website will send you the protocol for the vaccinated and unvaccinated for dealing with the variants.
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