| Typicality: | 0.601 |
| Saliency: | 0.692 |
| well | 8 | degree |
| the year | 8 | temporal |
| from 2006 | 6 | temporal |
| vaccine → be → introduced | 470 |
| vaccine → come into → use | 6 |
| vaccine → be introduced in → addition | 3 |
| vaccine → be introduced into → use | 3 |
| vaccine → be introduced in → recent years | 3 |
| negative | neutral | positive |
| 0.363 | 0.507 | 0.130 |
| Raw frequency | 485 |
| Normalized frequency | 0.692 |
| Modifier score | 0.670 |
| Perplexity | 236.562 |