| currently | 3 | temporal |
| during the outbreak | 3 | temporal |
| on children ages | 2 | other |
| vaccine → be → trialled | 9 |
| vaccine → undergo → trial | 4 |
| vaccine → be → trial | 3 |
| negative | neutral | positive |
| 0.276 | 0.566 | 0.159 |
| Raw frequency | 16 |
| Normalized frequency | 0.228 |
| Modifier score | 0.950 |
| Perplexity | 236.208 |