| Similarity | Rank | |
|---|---|---|
| influenza | 0.892 | 17313 |
| Measles | 0.874 | 93119 |
| Flu | 0.872 | 27354 |
| H1N1 | 0.870 | 28204 |
| Vaccination | 0.848 | 59890 |
| Vaccine | 0.847 | 39825 |
| Avian | 0.839 | 58666 |
| Hepatitis | 0.831 | 29506 |
| Swine | 0.825 | 45975 |
| flu | 0.818 | 7168 |
| Meningitis | 0.815 | 86325 |
| Pneumonia | 0.815 | 74411 |
| Dengue | 0.814 | 81476 |
| Rabies | 0.813 | 68756 |
| Pandemic | 0.812 | 69823 |
| meningococcal | 0.803 | 89555 |
| Infectious | 0.798 | 38588 |
| measles | 0.798 | 31884 |
| Immunization | 0.792 | 64508 |
| Vaccines | 0.790 | 50790 |
| H5N1 | 0.781 | 35572 |
| pneumococcal | 0.777 | 77954 |
| dengue | 0.776 | 44634 |
| Ebola | 0.776 | 80746 |
| Infections | 0.774 | 32849 |