| usually | 12 | degree |
| during the course of illness | 4 | temporal |
| for several months | 3 | temporal |
| virus → be found in → saliva | 39 |
| virus → be present in → saliva | 32 |
| virus → be found in → the saliva | 10 |
| virus → be found in → the saliva of infected persons | 7 |
| virus → be present in → the saliva | 6 |
| virus → be in → saliva | 5 |
| virus → be detected in → saliva | 4 |
| virus → be found in → the saliva of healthy people | 3 |
| virus → live in → the saliva | 3 |
| negative | neutral | positive |
| 0.728 | 0.259 | 0.013 |
| Raw frequency | 109 |
| Normalized frequency | 0.641 |
| Modifier score | 0.742 |
| Perplexity | 51.436 |