Innate Immunity, Adaptive Immunity, Antigen Presentation and MHC, T-Cell Biology, B-Cell and Antibody Biology, NK Cells and Innate Lymphoid Cells, Pattern Recognition and PRRs, Inflammasomes and Innate Signaling, Cytokines and Chemokines, Complement System, Mucosal Immunity (Gut, Lung, Skin), Neuroimmunology, Immunometabolism, Immunogenetics and HLA, Immune Tolerance and Regulation, Autoimmunity and Autoinflammation, Allergy and Hypersensitivity, Immunodeficiency (Primary and Secondary), Infectious Disease Immunology, Antiviral Immunity, Antibacterial Immunity, Antifungal and Parasite Immunity, Vaccinology and Adjuvants, Vaccine Platforms (mRNA, Viral Vectors), Tumor Immunology and Immunotherapy, Checkpoint Inhibitors, CAR-T and Cellular Therapies, Monoclonal Antibodies and Engineering, Transplantation Immunology, Immunosenescence and Aging, Pregnancy and Reproductive Immunology, Microbiome–Immune Interactions, Immune Dysregulation (Cytokine Storm and Sepsis), Systems and Computational Immunology, Single-Cell and Omics in Immunology, Epigenetic Regulation of Immunity, Immunoassays and Diagnostics, Flow Cytometry and Sorting, Animal Models and Human Challenge Studies, Clinical Trials and Translational Immunology