Three Studies Link High IgG4 to Severe COVID-19

Previously, I published Pfizer mRNA shots Switch Antibodies to Non-Neutralizing IgG4. It featured research from Germany that showed that the IgG4 is produced by the memory B cells after two doses of Pfizer mRNA injection.  Immunoglobulin G4 is an antibody and is a subclass of IgG. IgGs are typically known to be active in fighting…