| previously | 9 | degree |
| as yet | 7 | other |
| to medical science | 5 | transitive-object |
| virus → be → unknown | 46 |
| virus → remain → unknown | 7 |
| negative | neutral | positive |
| 0.415 | 0.505 | 0.080 |
| Raw frequency | 53 |
| Normalized frequency | 0.512 |
| Modifier score | 0.700 |
| Perplexity | 106.747 |