| in europe | 7 | location |
| in poultry | 6 | location |
| in humans | 6 | other |
| virus → cause → outbreak | 33 |
| virus → cause → the outbreak | 14 |
| virus → caused → outbreak | 8 |
| virus → lead to → outbreak | 3 |
| virus → cause → this outbreak | 3 |
| virus → trigger → outbreak | 3 |
| negative | neutral | positive |
| 0.650 | 0.314 | 0.036 |
| Raw frequency | 64 |
| Normalized frequency | 0.546 |
| Modifier score | 0.367 |
| Perplexity | 87.369 |