| to strengthen the immune response | 3 | purpose |
| often | 3 | temporal |
| vaccine → require → adjuvant | 6 |
| vaccine → be → adjuvanted | 6 |
| vaccine → need → adjuvant | 4 |
| negative | neutral | positive |
| 0.224 | 0.659 | 0.117 |
| Raw frequency | 16 |
| Normalized frequency | 0.228 |
| Modifier score | 0.850 |
| Perplexity | 46.877 |