| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| viruses in history | 0.1 | 0.1 | 3954 | 10 | 18 |
| viruses | 0.62 | 0.4 | 2249 | 16 | 7 |
| in | 1.35 | 0.5 | 4685 | 96 | 2 |
| history | 0.66 | 0.4 | 4816 | 12 | 7 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| viruses in history | 1.33 | 0.8 | 1493 | 93 |
| viruses in history of culture | 0.29 | 0.6 | 4328 | 71 |
| viruses in history of ecology | 1.31 | 1 | 7251 | 37 |
| viruses in history of warfare | 1.04 | 0.3 | 6288 | 24 |
| viruses in history of genetics | 0.6 | 0.2 | 6332 | 66 |
| viruses in history of humanity | 1.86 | 0.6 | 6074 | 81 |
| viruses in history of medicine | 1.53 | 0.4 | 5819 | 36 |
| viruses in history of virology | 0.68 | 1 | 8432 | 91 |
| viruses in history of evolution | 1.24 | 1 | 8305 | 40 |
| viruses in history of pandemics | 0.49 | 0.8 | 5170 | 36 |
| viruses in history of vaccination | 0.75 | 0.1 | 1319 | 89 |
| viruses in history of biotechnology | 0.7 | 0.3 | 8922 | 97 |
| deadliest virus in history | 1.02 | 0.5 | 2087 | 27 |
| history of computer viruses | 1.16 | 0.1 | 9564 | 74 |
| chinese viruses history | 0.02 | 0.4 | 8124 | 77 |
| worst viruses in history | 1.12 | 0.5 | 6510 | 74 |
| deadly viruses in history | 1.12 | 1 | 4214 | 82 |
| worst computer viruses in history | 1.1 | 0.7 | 676 | 24 |
| viruses outbreaks in history | 1.62 | 0.4 | 2102 | 2 |
