| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| pandemic that happened at 1820 | 1.29 | 0.4 | 4150 | 1 |
| what pandemic happened in 1820 | 0.55 | 1 | 8731 | 80 |
| what epidemic happened in 1820 | 1.83 | 0.9 | 524 | 45 |
| what virus happened in 1820 | 0.74 | 0.8 | 6923 | 54 |
| what disease happened in 1820 | 0.43 | 0.6 | 9182 | 11 |
| pandemics that happened in the late 1900s | 0.49 | 0.5 | 2527 | 49 |
| what pandemic happened in 1920 | 0.78 | 0.7 | 993 | 2 |
| what plague happened in 1820 | 1.96 | 1 | 5823 | 22 |
| what pandemic happened in 1720 | 1.85 | 0.1 | 8128 | 6 |
| what pandemic was in 1620 | 1.69 | 0.4 | 3920 | 4 |
| pandemic in the 1800s | 0.37 | 0.1 | 6124 | 66 |
| pandemic in early 1900 | 1.04 | 0.5 | 125 | 65 |
| the pandemic of 1900 | 1.1 | 0.1 | 3764 | 79 |
| the pandemic of 1902 | 0.01 | 0.1 | 3580 | 47 |
| the pandemic of 1901 | 1.42 | 0.3 | 8679 | 20 |
| what pandemic was in 1920 | 1.38 | 0.6 | 1222 | 48 |
| what pandemic was in 1720 | 1.05 | 0.7 | 936 | 43 |
| what virus was in 1820 | 0.75 | 0.6 | 8660 | 94 |
| early twenty first century pandemics | 1.45 | 0.9 | 1058 | 86 |
