| IBV | Influenza B virus |
| WHO | World Health Organization |
| NA | Neuraminidase |
| HA | Hemagglutinin |
| PA | Acidic Polymerase |
| vRNP | Viral ribonucleoprotein |
| vRNA | Viral RNA |
| RBS | Receptor-binding site |
| LAIV | live attenuated influenza vaccine |
| NLS | Nuclear localization signal |
| TGN | Trans-Golgi network |
| RdRp | RNA-dependent RNA polymerase |
| CTD | C-terminal repeat domain |
| CRM | Chromosome Region Maintenance |
| GTP | Guanosine triphosphate |
| NAI | Neuraminidase Inhibitors |
| PIs | Viral polymerase inhibitors |
| bnAbs | Broadly neutralizing antibodies |
| RBS | Receptor binding site |
| HI | Hemagglutination inhibition |
| DADs | Direct-acting drugs |
| NTZ | Nitazoxanide |
| TIZ | Tizoxanide |