| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| smallpox vaccine invention description | 1.82 | 0.9 | 4521 | 35 | 38 |
| smallpox | 0.25 | 0.9 | 3478 | 1 | 8 |
| vaccine | 1.22 | 0.9 | 2618 | 33 | 7 |
| invention | 1.9 | 0.1 | 539 | 19 | 9 |
| description | 1.43 | 0.6 | 9836 | 75 | 11 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| smallpox vaccine invention description | 0.01 | 0.8 | 2516 | 24 |
| what year was the smallpox vaccine invented | 1.26 | 0.4 | 3447 | 26 |
| who invented the vaccination for smallpox | 0.9 | 0.7 | 3252 | 69 |
