| Similarity | Rank | |
|---|---|---|
| pandemic | 0.804 | 26455 |
| an_epidemic | 0.794 | 82990 |
| outbreak | 0.770 | 10943 |
| cholera | 0.701 | 27526 |
| disease_outbreak | 0.687 | 90918 |
| disease | 0.679 | 971 |
| outbreak_of | 0.672 | 54409 |
| influenza | 0.657 | 26018 |
| an_outbreak | 0.652 | 99315 |
| the_Ebola_virus | 0.651 | 74773 |
| infectious_disease | 0.648 | 13558 |
| Ebola | 0.647 | 11439 |
| communicable_disease | 0.641 | 59999 |
| HIV_infection | 0.632 | 29645 |
| plague | 0.624 | 9635 |
| malaria | 0.622 | 9087 |
| HIV_/_AIDS | 0.620 | 9611 |
| these_disease | 0.619 | 36658 |
| dengue | 0.614 | 47346 |
| an_outbreak_of | 0.613 | 92417 |
| measles | 0.612 | 26034 |
| yellow_fever | 0.610 | 84774 |
| tuberculosis | 0.608 | 12629 |
| AIDS | 0.604 | 5695 |
| smallpox | 0.604 | 53441 |