| IAV | Influenza A virus |
| IBV | Influenza B virus |
| vRNA | Viral RNAs |
| vRNP | Viral ribonucleoprotein |
| NAb | Neutralizing antibody |
| ts | Temperature-sensitive |
| ca | Cold-adapted |
| att | Attenuated |
| PB2 | Polymerase basic 2 |
| PB1 | Polymerase basic 1 |
| PA | Polymerase acid |
| HA | Hemagglutinin |
| NA | Neuraminidase |
| NP | Nucleoprotein |
| NS1 | Non-structural protein 1 |
| ORF | Open reading frame |
| NCR | Non-coding region |
| IFN-I | Type I interferon |
| LAIV | Live attenuated influenza vaccine |
| IIV | Influenza inactivated vaccine |
| VLP | Virus-like particle |
| WHO | World Health Organization |
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