| Similarity | Rank | |
|---|---|---|
| aids | 0.853 | 3314 |
| infection | 0.789 | 2615 |
| hepatitis | 0.776 | 7631 |
| tuberculosis | 0.775 | 11298 |
| toxoplasmosis | 0.773 | 29902 |
| herpes | 0.772 | 22310 |
| infect | 0.761 | 6681 |
| infected | 0.757 | 8828 |
| virus | 0.751 | 3744 |
| rubella | 0.746 | 36198 |
| chlamydia | 0.743 | 41650 |
| gonorrhoea | 0.736 | 18149 |
| misuser | 0.726 | 31960 |
| diphtheria | 0.723 | 24994 |
| vaccine | 0.722 | 8601 |
| haemophiliac | 0.715 | 26237 |
| immunisation | 0.714 | 21651 |
| hbv | 0.712 | 22914 |
| immunodeficiency | 0.711 | 33669 |
| vaccinate | 0.706 | 25748 |
| meningitis | 0.703 | 14760 |
| vaccination | 0.702 | 13071 |
| cowpox | 0.702 | 85609 |
| testicular | 0.701 | 40374 |
| mumps | 0.701 | 58304 |