Post-vaccination #IgG4 and IgG2 class switch associated with increased risk of breakthrough #SARSCoV2 infections
#IDSky
www.journalofinfection.com/article/S016...
Post-vaccination IgG4 and IgG2...
Post-vaccination #IgG4 and IgG2 class switch associated with increased risk of breakthrough #SARSCoV2 infections
#IDSky
www.journalofinfection.com/article/S016...
Post-vaccination IgG4 and IgG2...
I've had mouth ulcers from eating walnuts. Walnuts can induce pemphigus vulgaris, which Dr McGowan mentions is also IgG4-related. [45:29]
... zutreffend und die tatsächlichen Erkenntnisse des Artikels müssen in einem anderen Licht betrachtet werden.
"IgG4 Antibodies Induced by Repeated Vaccination May Generate Immune Tolerance to the SARS-CoV-2 Spike Protein": https://pubmed.ncbi.nlm.nih.gov/37243095
Another listener question about a rumor COVID #mRNA vaccines change IgG1 antibodies to IgG4 and how #IgG4 actually doesn’t help with #COVID. Higher IgG4 counts correlate to lower allergy response, but nobody knows what higher IgG4 means for COVID. IgG4 doesn’t affect neutralization, but maybe affects something downstream in the immune response. But the #vaccines DO work, so that means that the IgG4 is “probably just fine.” 16/
The #IgG4 Switcheroo after Repeated #SARSCoV2 #mRNA #Vaccinations | BAD, GOOD, OR MISUNDERSTOOD | Shiv Pillai takes a look in Fascinating 'Focus' Article now at Science Magazine #Immunology | #antibodies | #IgG
https://www.science.org/doi/10.1126/sciimmunol.ade2798
Repeated doses of mRNA vaccine bias the antibody response to a less inflammatory IgG4 subtype. These antibodies still neutralise the virus, but some other effector functions are reduced.
What could this mean for future #COVID19 vaccine policy? Helpful commentary here by the legendary Shiv Pallai: is it bad, is it good, or is #IgG4 just misunderstood?
Sorry, sorry, sorry to keep giving links to the bird app. I just have not been finding this information here and want to do what I can to get it out. This is a very useful thread explaining the whole #mRNA vaccines and #IgG4 issue, both what it does and does not mean.
https://twitter.com/sabivm/status/1607915944877211651?s=46&t=8PskNN5UcFa0-xyOJCjmeQ
We observed an unexpected rise in #IgG4 #antibodies after repeated #SARS-CoV-2 #mRNA vaccination.
This work is now published at #Science Immunology.
https://www.science.org/doi/10.1126/sciimmunol.ade2798
IgG4 is a non-inflammatory IgG subclass and we see a deterioration in Fc-mediated effector functions like phagocytosis and complement deposition, while Fab-mediated avidity maturation and cross-neutralization are preserved.
What does this mean for protection? We don't know and it's complicated. Read the paper!