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UnderwaterJJ's avatar

I didn't go through the entire paper yet, but this quote from the abstract is interesting, "This induction of IgG4 antibodies was not observed after homologous or heterologous SARS-CoV-2 vaccination with adenoviral vectors."

It goes along with a comment I had on the post from the other day "did covid vaccines prevent covid deaths in the US?", in terms of different non-specific effects (NSE) of different types of vaccines, including mRNA, adenovirus vectored, subunit, and whole virion (including distinctions among 'adjuvants').

The paper I posted was specific to covid and looked at mRNA vs adenovirus...

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=4072489

Beyond that, I think watching India may be interesting since, while highly vaxxed, it did use primarily adenovirus (Covidshield aka Astra Zeneca) and whole virion (Covaxin) vaccines. In my view the latter may be particularly interesting regarding the IgG4 issues since it should overcome the spike-only fixation (being whole virion), but also its adjuvant (a TRL7/8 agonist) predicates more of a Th1 response (i.e. cell mediated) vs. a Th2 response (i.e. antibody) typical in an alum (only) adjuvanted vaccine (e.g. the Chinese whole virion vaccines). I have wondered for a time if this could enable it (Covaxin) to 'fix' the immune suppression of the mRNA shots from both an OAS perspective (fixaxtion to spike) and innate suppression (inherent w/mRNA shot design w/pseudouridine modification, etc.). Allegedly Phase 3 'immunobridging and broadening' trial data may come out in January (homologous and heterologous w/mRNA or adenovirus).

Irregardless, I think the potential angle (in terms of remediation) may be along the lines of other work from Christine Stabell Benn (author of paper above) which suggests negative NSE of certain vaccines could be undone by other vaccines/protocols (https://pubmed.ncbi.nlm.nih.gov/32645296/).

N.B. Novavax also contains an adjuvant biased towards Th1 response as well.

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Loving Mom's avatar

Thanks for taking us a little deeper into this. Jeff Childers' substack ("Coffee & Covid") had a great layman's explanation today, which was the perfect lead-in to your piece just as it landed in my inbox. You guys are doing such GREAT WORK educating the public on all of this. Thank you, thank you, thank you.

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