| Similarity | Rank | |
|---|---|---|
| Vaccination | 0.864 | 59890 |
| immunization | 0.858 | 31040 |
| Vaccine | 0.836 | 39825 |
| immunizations | 0.808 | 42167 |
| Influenza | 0.792 | 47326 |
| Rabies | 0.774 | 68756 |
| Vaccinations | 0.767 | 79444 |
| vaccination | 0.765 | 15659 |
| Hepatitis | 0.760 | 29506 |
| CDC | 0.749 | 14261 |
| meningococcal | 0.749 | 89555 |
| Measles | 0.745 | 93119 |
| CDC's | 0.743 | 62006 |
| Perinatal | 0.738 | 99738 |
| Vaccines | 0.738 | 50790 |
| Prevention | 0.734 | 9148 |
| Infectious | 0.730 | 38588 |
| Tuberculosis | 0.728 | 46063 |
| pneumococcal | 0.727 | 77954 |
| pertussis | 0.724 | 61015 |
| Meningitis | 0.722 | 86325 |
| rotavirus | 0.721 | 82713 |
| H1N1 | 0.715 | 28204 |
| vaccine | 0.711 | 8077 |
| DHHS | 0.709 | 85628 |