| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| 1918 flu pandemic vaccine | 1.98 | 0.1 | 2979 | 25 | 25 |
| 1918 | 0.45 | 1 | 4858 | 39 | 4 |
| flu | 0.15 | 0.4 | 8747 | 76 | 3 |
| pandemic | 1.82 | 0.1 | 8895 | 89 | 8 |
| vaccine | 0.61 | 0.9 | 865 | 70 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| 1918 flu pandemic vaccine | 0.49 | 0.1 | 8815 | 11 |
| was there a vaccine for the 1918 flu pandemic | 1.64 | 0.8 | 6764 | 17 |
| does 1918 flu pandemic have a vaccine | 1.7 | 0.3 | 8534 | 56 |
| the 1918 flu pandemic | 0.64 | 0.7 | 5940 | 12 |
| cdc 1918 flu pandemic | 0.51 | 1 | 7410 | 46 |
| history of 1918 flu pandemic | 0.24 | 0.7 | 1557 | 99 |
| great flu pandemic of 1918 | 0.88 | 0.5 | 7162 | 100 |
| the 1918 flu pandemic that killed millions | 1.85 | 0.2 | 4471 | 11 |
| pandemic flu of 1918 images | 0.01 | 0.6 | 907 | 42 |
| global flu pandemic 1918 | 1.56 | 0.6 | 6917 | 73 |
| the flu pandemic of 1918 national archives | 0.45 | 0.9 | 2651 | 29 |
| the 1918 influenza pandemic | 0.28 | 0.3 | 5746 | 19 |
| cdc 1918 pandemic influenza | 1.09 | 0.8 | 3192 | 48 |
| information about 1918 influenza pandemic | 1.85 | 0.3 | 265 | 47 |
| flu epidemic of 1918 | 0.62 | 0.4 | 5757 | 77 |
| the 1918 influenza pandemic in america | 0.57 | 0.3 | 863 | 4 |
| news 1918 influenza pandemic | 0.07 | 0.8 | 5605 | 63 |
