| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| smallpox vaccine discovered by | 1.55 | 0.8 | 4462 | 81 | 30 |
| smallpox | 0.84 | 0.2 | 3236 | 60 | 8 |
| vaccine | 1.06 | 0.7 | 9495 | 41 | 7 |
| discovered | 1.76 | 0.4 | 3587 | 61 | 10 |
| by | 1.68 | 0.6 | 3392 | 51 | 2 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| smallpox vaccine discovered by | 1.9 | 0.6 | 9102 | 70 |
