| in the blood | 5 | location |
| during the swine flu incubation period | 4 | temporal |
| compared to negative control group | 3 | other |
| virus → be → detected | 13 |
| virus → be → detectable | 8 |
| negative | neutral | positive |
| 0.349 | 0.574 | 0.077 |
| Raw frequency | 21 |
| Normalized frequency | 0.470 |
| Modifier score | 0.000 |
| Perplexity | 369.090 |