| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of covid vaccine | 1.2 | 0.3 | 5324 | 39 | 24 |
| history | 0.46 | 0.8 | 8613 | 74 | 7 |
| of | 1.06 | 0.3 | 3262 | 40 | 2 |
| covid | 1.84 | 0.9 | 4083 | 77 | 5 |
| vaccine | 1.68 | 1 | 2049 | 56 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of covid vaccine | 1.45 | 0.9 | 9557 | 57 |
