| Similarity | Rank | |
|---|---|---|
| outbreak | 0.806 | 10943 |
| an_outbreak_of | 0.719 | 92417 |
| disease_outbreak | 0.700 | 90918 |
| an_epidemic | 0.672 | 82990 |
| epidemic | 0.652 | 9792 |
| infection | 0.648 | 2757 |
| outbreak_of | 0.647 | 54409 |
| bird_flu | 0.646 | 79601 |
| avian_influenza | 0.640 | 99042 |
| human_case | 0.635 | 92399 |
| measles | 0.628 | 26034 |
| Salmonella | 0.626 | 55733 |
| the_Ebola_virus | 0.626 | 74773 |
| salmonella | 0.626 | 79933 |
| pandemic | 0.624 | 26455 |
| influenza | 0.623 | 26018 |
| swine_flu | 0.622 | 73020 |
| hepatitis_A | 0.618 | 96413 |
| anthrax | 0.606 | 45883 |
| H1N1 | 0.602 | 92062 |
| Ebola | 0.593 | 11439 |
| MRSA | 0.591 | 50269 |
| an_infection | 0.590 | 37030 |
| influenza_virus | 0.589 | 75849 |
| brucellosis | 0.586 | 68055 |