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| Risk division level | Number of HFRS in 2015–2019 | Area (1000km2) | Proportion of Total cases((%) | Risk area ratio(%) | HFRS Density (cases/100km2) |
|---|---|---|---|---|---|
| Severe risk area | 1446 | 17.420 | 42.68 | 8.25 | 83.01 |
| High risk area | 1336 | 55.190 | 39.43 | 26.15 | 24.21 |
| Medium risk area | 440 | 47.579 | 12.99 | 22.54 | 9.25 |
| Low risk area | 166 | 90.882 | 4.90 | 43.06 | 1.83 |
