Lotfi Jelassi, 53, and his son Mohammed Ali Jelassi, 12, spreading couscous to dry in the sun on the roof of their home in a suburb of Tunis. The home was built by Lotfi's father, a farmer, and the family's fields can be seen in the background. Inherited blood disorders are prevalent in the family. Notably, Lotfi's nineteen year-old niece, Rihem Jelassi, suffers from sickle cell beta-plus thalasaemia. Though he has not yet been tested, the family suspects Mohammed Ali may have a condition similar to Rihem's.