| very | 66 | degree |
| in humans | 15 | other |
| relatively | 13 | degree |
| infection → be → rare | 254 |
| infection → be → rare case | 10 |
| infection → be → rare occurrence | 3 |
| infection → become → rare | 3 |
| infection → remain → rare | 3 |
| infection → be considered → rare | 3 |
| negative | neutral | positive |
| 0.433 | 0.470 | 0.097 |
| Raw frequency | 276 |
| Normalized frequency | 0.745 |
| Modifier score | 0.700 |
| Perplexity | 42.876 |