| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| did covid vaccine have clinical trials | 1.93 | 0.6 | 8900 | 72 |
| covid vaccine clinical trials | 0.71 | 1 | 7544 | 43 |
| covid 19 vaccine clinical trials | 0.56 | 0.7 | 1031 | 39 |
| covid vaccine clinical trials 2023 | 0.16 | 0.4 | 6888 | 54 |
| novavax covid vaccine clinical trials | 0.16 | 0.2 | 8461 | 32 |
| were clinical trials done for covid vaccine | 0.1 | 1 | 8779 | 100 |
| covid 19 mrna vaccine clinical trials | 1.25 | 0.8 | 5987 | 50 |
| covid vaccine clinical trials end date | 1.49 | 0.4 | 2964 | 55 |
| covid vaccine clinical trials results | 1.95 | 0.7 | 8886 | 57 |
| pfizer covid vaccine clinical trial data | 1.67 | 1 | 229 | 84 |
| pfizer covid vaccine clinical trial report | 1.75 | 0.6 | 1263 | 79 |
| moderna covid vaccine clinical trial results | 0.84 | 0.2 | 8635 | 50 |
| first covid vaccine clinical trial | 1.96 | 1 | 4927 | 77 |
