| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| h1n1 2009 | 1.66 | 0.9 | 7776 | 39 |
| h1n1 2009 pandemic | 0.01 | 0.8 | 2877 | 76 |
| h1n1 2009 pdm | 1.85 | 0.5 | 5838 | 59 |
| h1n1 2009 deaths | 1.6 | 0.2 | 3829 | 52 |
| h1n1 2009 origin | 1.72 | 0.5 | 2489 | 63 |
| h1n1 2009 vaccine | 1.4 | 0.6 | 348 | 27 |
| h1n1 swine flu outbreak in 2009 | 0.29 | 0.1 | 7623 | 86 |
| influenza a h1n1 2009 | 1.41 | 0.3 | 3330 | 7 |
| the 2009 h1n1 flu virus | 0.54 | 0.3 | 346 | 11 |
| 2009 h1n1 flu | 1.64 | 1 | 7727 | 49 |
| major events in the 2009 h1n1 pandemic | 0.71 | 1 | 3543 | 63 |
| which flu was termed h1n1 flu in 2009 | 1.66 | 1 | 6075 | 83 |
