| rarely | 4 | degree |
| in mammals | 4 | other |
| for quite a long time | 4 | temporal |
| virus → be found in → human | 21 |
| virus → be seen in → human | 4 |
| virus → be → human | 4 |
| virus → be in → human | 3 |
| virus → have on → human | 3 |
| virus → occur in → human | 3 |
| negative | neutral | positive |
| 0.597 | 0.375 | 0.028 |
| Raw frequency | 38 |
| Normalized frequency | 0.453 |
| Modifier score | 0.367 |
| Perplexity | 37.663 |