| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| covid 19 vaccine clinical trials | 0.86 | 0.3 | 833 | 26 |
| covid 19 vaccine clinical trials pfizer | 1.08 | 0.3 | 9532 | 80 |
| covid 19 mrna vaccine clinical trials | 0.43 | 0.8 | 1781 | 30 |
| fda guidance covid 19 vaccine clinical trial | 0.78 | 1 | 4189 | 19 |
| covid 19 vaccine still in clinical trials | 0.11 | 0.8 | 7173 | 76 |
| covid vaccine clinical trials | 0.88 | 0.4 | 5063 | 76 |
| cdc covid vaccine clinical trials | 1.6 | 0.2 | 6693 | 53 |
| covid 19 vaccine research | 0.08 | 0.5 | 141 | 93 |
| covid 19 vaccine research studies | 1.02 | 0.3 | 2436 | 92 |
| study on covid 19 vaccine | 0.19 | 1 | 961 | 70 |
| covid 19 vaccine case study | 1.91 | 0.8 | 7946 | 80 |
| covid 19 current vaccine | 0.84 | 0.4 | 2113 | 20 |
| vaccine development for covid 19 | 0.68 | 0.1 | 9061 | 59 |
| covid 19 vaccination research | 1.85 | 0.3 | 2879 | 8 |
| pfizer covid 19 vaccine | 0.28 | 0.3 | 6884 | 13 |
