| Similarity | Rank | |
|---|---|---|
| vaccine | 0.851 | 8077 |
| HPV | 0.844 | 19306 |
| vaccines | 0.800 | 12666 |
| Tamiflu | 0.781 | 58208 |
| MMR | 0.774 | 49051 |
| Avastin | 0.766 | 69176 |
| meningococcal | 0.762 | 89555 |
| pertussis | 0.760 | 61015 |
| H1N1 | 0.758 | 28204 |
| thimerosal | 0.757 | 91384 |
| chickenpox | 0.756 | 55566 |
| varicella | 0.753 | 92938 |
| papillomavirus | 0.751 | 75781 |
| rotavirus | 0.750 | 82713 |
| Herceptin | 0.750 | 84291 |
| rubella | 0.749 | 67849 |
| pneumococcal | 0.741 | 77954 |
| mumps | 0.735 | 63582 |
| unvaccinated | 0.731 | 91641 |
| vaccinating | 0.731 | 79604 |
| vaccinated | 0.730 | 25412 |
| vaccination | 0.727 | 15659 |
| Vaccine | 0.727 | 39825 |
| STDs | 0.727 | 38939 |
| Vaccines | 0.721 | 50790 |