| ANN | Artificial neural network |
| AUC | Area under the receiver operating characteristic curve |
| CDC | Center for Control, Disease and Prevention |
| HA | Hemagglutinin |
| M1 | Matrix protein 1 |
| M2 | Matrix protein 2 |
| NA | Neuraminidase |
| NP | Nucleoprotein |
| NS1 | Non-structural protein 1 |
| NS2 | Non-structural protein 2 |
| PA | Polymerase acidic protein |
| PB1 | Polymerase basic protein 1 |
| PB1-F2 | Accessory protein F2 translated from PB1 segment |
| PB2 | Polymerase basic protein 2 |
| SVM | Support vector machine |
| WHO | World Health Organization |