| Similarity | Rank | |
|---|---|---|
| H1N1 | 0.921 | 28204 |
| flu | 0.902 | 7168 |
| measles | 0.898 | 31884 |
| Influenza | 0.892 | 47326 |
| pertussis | 0.881 | 61015 |
| rotavirus | 0.880 | 82713 |
| meningococcal | 0.873 | 89555 |
| vaccine | 0.867 | 8077 |
| pneumococcal | 0.860 | 77954 |
| diphtheria | 0.857 | 65182 |
| dengue | 0.856 | 44634 |
| mumps | 0.848 | 63582 |
| meningitis | 0.843 | 30455 |
| pandemic | 0.840 | 22984 |
| rubella | 0.840 | 67849 |
| varicella | 0.837 | 92938 |
| H5N1 | 0.833 | 35572 |
| vaccination | 0.828 | 15659 |
| hepatitis | 0.826 | 17386 |
| Measles | 0.826 | 93119 |
| gastroenteritis | 0.821 | 75608 |
| norovirus | 0.820 | 89325 |
| encephalitis | 0.819 | 57536 |
| vaccines | 0.817 | 12666 |
| pneumonia | 0.812 | 17056 |