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Breakdown of the annual number of births with the different hemoglobin disorders from data available2
| Major hemoglobin disorder | No. of annual births |
|---|---|
| β thalassemia major | 22 989 |
| HbE β thalassemia | 19 128 |
| HbH disease | 9 568 |
| Hb Bart hydrops (α°/α°) | 5 183 |
| SS disease | 217 331 |
| S β thalassemia | 11 074 |
| SC disease | 54 736 |
SS indicates sickle cell anemia; SC, sickle cell; and Hb, hemoglobin.
