| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| first polio vaccine date | 1.76 | 0.8 | 3217 | 45 | 24 |
| first | 0.41 | 0.9 | 4804 | 45 | 5 |
| polio | 0.22 | 0.6 | 2450 | 20 | 5 |
| vaccine | 1.44 | 0.5 | 3128 | 50 | 7 |
| date | 1.14 | 0.7 | 9915 | 61 | 4 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| first polio vaccine date | 1.36 | 1 | 2459 | 96 |
| year polio vaccine introduced | 1.9 | 0.7 | 1838 | 12 |
