COVID-19 vaccination and leprosy–A UK hospital-based retrospective cohort study
I give you two articles, first the pre-print, then the version that gets published months later. Note the differences...
IgG4 Antibodies Induced by mRNA Vaccines Generate Immune Tolerance to SARS-CoV-2’spike Protein by Suppressing the Immune System
IgG4 Antibodies Induced by Repeated Vaccination May Generate Immune Tolerance to the SARS-CoV-2 Spike Protein