| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| history of mrna vaccine technology | 0.92 | 0.7 | 174 | 54 | 34 |
| history | 0.97 | 0.8 | 784 | 76 | 7 |
| of | 0.97 | 0.2 | 2058 | 37 | 2 |
| mrna | 1.57 | 0.8 | 7728 | 66 | 4 |
| vaccine | 1.05 | 0.3 | 5542 | 61 | 7 |
| technology | 1.96 | 0.7 | 1809 | 92 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| history of mrna vaccine technology | 0.12 | 0.4 | 4889 | 92 |
