| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| incidence of polio in us | 0.82 | 0.2 | 549 | 22 |
| polio incidence in usa | 0.11 | 0.4 | 1061 | 73 |
| number of polio cases in the us | 0.18 | 0.7 | 8736 | 87 |
| cases of polio in us by year | 1.74 | 0.4 | 5986 | 90 |
| cases of polio in us | 0.13 | 0.9 | 7390 | 72 |
| how many cases of polio in usa | 0.59 | 0.9 | 372 | 66 |
| number of cases of polio by year | 1.86 | 0.5 | 5082 | 3 |
| polio epidemic in the united states | 1.5 | 0.7 | 1069 | 42 |
| how common is polio | 1.58 | 0.4 | 7047 | 13 |
| polio statistics by year | 1.75 | 0.2 | 8013 | 49 |
| how common is polio today | 0.93 | 0.9 | 3354 | 40 |
| how many people are affected by polio | 0.41 | 0.4 | 2120 | 56 |
| polio rates by year | 0.58 | 0.9 | 3029 | 32 |
| how many people currently have polio | 1.78 | 0.9 | 4798 | 21 |
