| AI | artificial intelligence |
| ALL | acute lymphocytic leukemia |
| AP-1 | activator protein-1 |
| APC | antigen-presenting cell |
| ARDS | acute respiratory distress syndrome |
| BBB | blood–brain barrier |
| CAM | cell adhesion molecule |
| CARS | compensatory anti-inflammatory response syndrome |
| CAR-T cell | chimeric antigen receptor-T cell |
| CMV | cytomegalovirus |
| COVID-19 | coronavirus disease 2019 |
| CRP | C-reactive protein |
| CRS | cytokine release syndrome |
| CS | cytokine storm |
| DAMP | damage-associated molecular pattern |
| DIC | disseminated intravascular coagulation |
| DNA | deoxyribonucleic acid |
| EBV | Epstein–Barr virus |
| fHbp | factor H-binding protein |
| GWAS | genome-wide association studies |
| GvHD | graft-versus-host disease |
| HLA-DR | human leukocyte antigen-DR |
| HLH | hemophagocytic lymphohistiocytosis |
| ICU | intensive care unit |
| IHCA | in-hospital cardiac arrest |
| IFN | interferon |
| IL | interleukin |
| IMD | invasive meningococcal disease |
| ISG | interferon-stimulated gene |
| ISTH | International Society on Thrombosis and Haemostasis |
| JAK | Janus kinase |
| LOS | lipooligosaccharide |
| LPS | lipopolysaccharide |
| MAS | macrophage activation syndrome |
| MDSC | myeloid-derived suppressor cell |
| MHC II | major histocompatibility complex II |
| MIF | migration inhibitory factor |
| NET | neutrophil extracellular traps |
| NHL | non-Hodgkin lymphoma |
| NF-κ | nuclear factor kappa-light-chain-enhancer |
| NK cell | natural killer cell |
| OHCA | out-of-hospital cardiac arrest |
| OPSI | overwhelming post-splenectomy infection |
| PAMP | pathogen-associated molecular pattern |
| PCAS | post-cardiac arrest syndrome |
| PCI | persistent critical illness |
| PCT | procalcitonin |
| PICS | persistent inflammation, immunosuppression, and catabolism |
| PRR | pattern recognition receptors |
| PT-INR | prothrombin time-International Normalized Ratio |
| ROSC | return of spontaneous circulation |
| SARS-CoV-2 | severe acute respiratory syndrome coronavirus type 2 |
| SIC | sepsis-induced coagulopathy |
| SIRS | systemic inflammatory response syndrome |
| STAT | signal transducer and activator of transcription |
| T4P | type IV pili |
| TF | tissue factor |
| TFPI | tissue factor pathway inhibitor |
| TGF-β | transforming growth factor β |
| TIR | Toll–interleukin-1 receptor domain |
| TLR | Toll-like receptor |
| TNF | tumor necrosis factor |