No. Sickle Cell is not an infectious disease, but is genetic.

No, sickle cell disease is not cancerous.

Sickle cell is not a germ, it's a disease! The spreading of this disease occurs when two people carry the trait of sickle cell in their genetic makeup and they have children. The odds of any child born to parents who carry the trait are different each time. 50% can be born with just trait, 1 out of 4 will be born with Sickle Cell Anemia and 1 out of 4 will be born without anything.

Then there are varied levels of Sickle Cell, there's Anemia (SS), Disease (SC).

it is heredity

Stem cell or bone marrow transplants are the only cure for sickle cell disease

Cancer is a disease caused by uncontrolled cell growth.