| Similarity | Rank | |
|---|---|---|
| Influenza | 0.812 | 47326 |
| Outbreak | 0.806 | 78213 |
| Flu | 0.800 | 27354 |
| Epidemic | 0.789 | 67773 |
| Swine | 0.778 | 45975 |
| Avian | 0.765 | 58666 |
| Vaccine | 0.745 | 39825 |
| Preparedness | 0.728 | 41881 |
| pandemic | 0.727 | 22984 |
| H1N1 | 0.720 | 28204 |
| Vaccines | 0.705 | 50790 |
| Measles | 0.684 | 93119 |
| Fallout | 0.682 | 42222 |
| Infectious | 0.678 | 38588 |
| Vaccination | 0.676 | 59890 |
| Malaria | 0.673 | 34358 |
| Plague | 0.672 | 43908 |
| Rabies | 0.672 | 68756 |
| Dengue | 0.668 | 81476 |
| pandemics | 0.667 | 81261 |
| Meningitis | 0.664 | 86325 |
| Survival | 0.664 | 18662 |
| Cholera | 0.660 | 87357 |
| Crisis | 0.660 | 13792 |
| Immunization | 0.660 | 64508 |