- Average annual rainfall and dengue cases in Makkah, Kingdom of Saudi Arabia.
| Year | Annual rainfall (mm) | Suspected dengue cases | Confirmed dengue cases | The precentage of suspected cases found to be positive |
|---|---|---|---|---|
| 2017 | 25.15 | 1,004 | 204 | 20.32% |
| 2018 | 11.74 | 752 | 163 | 21.67% |
| 2019 | 110.8 | 1,571 | 748 | 47.61% |