| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| covid vaccine california history | 0.62 | 0.2 | 307 | 86 | 32 |
| covid | 1.85 | 0.4 | 3127 | 52 | 5 |
| vaccine | 1.31 | 0.8 | 9825 | 78 | 7 |
| california | 0.04 | 1 | 38 | 100 | 10 |
| history | 1.28 | 0.2 | 6784 | 28 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| covid vaccine california history | 1.89 | 0.3 | 606 | 74 |
| history of covid vaccine | 1.85 | 0.2 | 1744 | 73 |
| when did the covid vaccine start | 1.91 | 0.2 | 8668 | 74 |
| when was the covid vaccine created | 1.04 | 0.5 | 1764 | 91 |
| when was the covid vaccine introduced | 0.14 | 0.7 | 893 | 54 |
| when was the covid vaccine developed | 1.53 | 0.2 | 5844 | 93 |
| when did covid vaccine start in usa | 1.68 | 0.3 | 8557 | 67 |
| when did the covid vaccine | 1.02 | 0.3 | 2762 | 20 |
| when did covid vaccine start in canada | 1.33 | 0.2 | 9754 | 54 |
| when did covid vaccines begin | 1.17 | 0.4 | 8575 | 6 |
| when did covid vaccination start | 1.57 | 0.1 | 962 | 30 |
| when did covid vaccination begin | 0.13 | 0.4 | 684 | 47 |
| history of covid vaccines timeline | 1.51 | 0.7 | 5905 | 3 |
| history of covid vaccine icd 10 | 0.12 | 0.5 | 491 | 10 |
| history of covid vaccine development | 0.33 | 1 | 3743 | 46 |
| history of covid vaccine and boosters | 1.99 | 0.6 | 5678 | 64 |
| history of covid vaccine recommendations | 1.99 | 0.6 | 3310 | 46 |
