| Similarity | Rank | |
|---|---|---|
| an_outbreak_of | 0.830 | 92417 |
| outbreak | 0.770 | 10943 |
| epidemic | 0.672 | 9792 |
| disease_outbreak | 0.670 | 90918 |
| the_outbreak_of | 0.659 | 34755 |
| an_outbreak | 0.647 | 99315 |
| human_case | 0.640 | 92399 |
| pandemic | 0.619 | 26455 |
| bird_flu | 0.602 | 79601 |
| influenza | 0.598 | 26018 |
| avian_influenza | 0.592 | 99042 |
| salmonella | 0.585 | 79933 |
| infection | 0.576 | 2757 |
| an_epidemic | 0.574 | 82990 |
| incidence_of | 0.574 | 38323 |
| hepatitis_A | 0.569 | 96413 |
| plague | 0.565 | 9635 |
| dengue_fever | 0.564 | 87089 |
| swine_flu | 0.563 | 73020 |
| spread_of | 0.559 | 4542 |
| epidemiology_of | 0.558 | 42103 |
| infestation | 0.557 | 27912 |
| cholera | 0.557 | 27526 |
| measles | 0.554 | 26034 |
| pathogen | 0.554 | 11287 |