| Typicality: | 0.324 |
| Saliency: | 0.242 |
| often | 5 | temporal |
| the latency period to develop | 3 | temporal |
| infection → be difficult to → detect | 7 |
| infection → be difficult to → identify | 3 |
| infection → be difficult to → differentiate | 3 |
| negative | neutral | positive |
| 0.847 | 0.146 | 0.007 |
| Raw frequency | 13 |
| Normalized frequency | 0.242 |
| Modifier score | 0.680 |
| Perplexity | 41.937 |