| Typicality: | 0.335 |
| Saliency: | 0.405 |
| by february | 3 | temporal |
| with the first officially recorded case | 2 | other |
| virus → be identified in → 2012 | 10 |
| virus → be discovered in → 2012 | 8 |
| virus → emerge in → 2012 | 4 |
| virus → appear in → 2012 | 4 |
| virus → be detected in → 2012 | 3 |
| negative | neutral | positive |
| 0.593 | 0.372 | 0.035 |
| Raw frequency | 29 |
| Normalized frequency | 0.405 |
| Modifier score | 0.500 |
| Perplexity | 58.876 |