Changes to key parts of the mRNA code in SARS-CoV-2 vaccines may be causal in changing the innate immune response via toll-like receptors. Toll-like receptors are important components in defence against infection and downstream effects may also include inhibition of CD8 T cell response. CD8 is a vital part of the immune system’s ability to eradicate infection and cancer. Those changes may be reflected in recent reactivated Varicella Zoster infections although specific mechanisms are unclear at the moment. Anecdotal reports of significant uptick in cancer presenting to medical consultants may be consistent with aberrant toll-like receptor and dendritic cell changes leading to an inhibition of the anti-cancer CD8 effector response. Further data are required but the prospect of an altered CD8 response to infection and cancer is very concerning and should prompt urgent investigation.
One might be forgiven for asking: surely someone must have cautioned against doing that? And isn’t that why new drug/vaccine products are supposed to be thoroughly tested before they are given to large populations?