| Similarity | Rank | |
|---|---|---|
| outbreak_of | 0.830 | 54409 |
| outbreak | 0.733 | 10943 |
| an_outbreak | 0.719 | 99315 |
| bird_flu | 0.637 | 79601 |
| the_outbreak_of | 0.633 | 34755 |
| an_epidemic | 0.626 | 82990 |
| disease_outbreak | 0.625 | 90918 |
| epidemic | 0.613 | 9792 |
| swine_flu | 0.612 | 73020 |
| human_case | 0.600 | 92399 |
| avian_influenza | 0.591 | 99042 |
| hepatitis_A | 0.580 | 96413 |
| salmonella | 0.578 | 79933 |
| infect_with | 0.576 | 87389 |
| plague | 0.574 | 9635 |
| influenza | 0.573 | 26018 |
| pandemic | 0.572 | 26455 |
| be_infect_with | 0.567 | 59036 |
| measles | 0.565 | 26034 |
| cholera | 0.557 | 27526 |
| infection | 0.554 | 2757 |
| typhoid | 0.553 | 80304 |
| H1N1 | 0.551 | 92062 |
| an_infection | 0.547 | 37030 |
| dengue_fever | 0.546 | 87089 |