| Typicality: | 0.431 |
| Saliency: | 0.425 |
| in humans in southern africa | 8 | location |
| at a lower cost | 5 | manner |
| safely | 4 | manner |
| vaccine → prevent → hiv infection | 36 |
| vaccine → prevent → hiv | 15 |
| vaccine → prevent → hiv-1 infection | 7 |
| vaccine → prevent → hiv infections | 7 |
| vaccine → prevent → the hiv virus | 3 |
| negative | neutral | positive |
| 0.197 | 0.551 | 0.252 |
| Raw frequency | 68 |
| Normalized frequency | 0.425 |
| Modifier score | 0.500 |
| Perplexity | 28.710 |