Sickle-cell disease, usually presenting in childhood, occurs more commonly in people (or their descendants) from parts of tropical and sub-tropical regions where malaria is or was common. The...
Sickle cell anemia is found mainly in people whose families come from Africa, the Caribbean, the Eastern Mediterranean, Middle East, and Asia. Most of the people affected come from Africa.
Sickle-cell disease, usually presenting in childhood, occurs more commonly in people (or their descendants) from parts of tropical and sub-tropical regions where malaria is or was common. One-third...