Circulating SARS-CoV-2 Spike IgG Antibody Levels and Avidity in Autoimmune, IBD and Transplant Cohorts: An Observational Study Following Multiple COVID-19 Vaccine Boosters
Background: Individuals with autoimmune disease, inflammatory bowel disease (IBD), and transplants face a higher risk of severe COVID-19 and breakthrough hospitalizations. It is essential to understand the magnitude and durability of vaccine-induced humoral immune response in these populations. Methods: We evaluated SA...