Blood is needed every day, not only in disasters or big accidents. Common ongoing needs include:

·       Children with thalassemia or sickle cell disease who need regular transfusions.

·       Cancer patients receiving chemotherapy.

·       Surgical and ICU patients.

·       Pregnant women with severe anemia or heavy bleeding.

Hospitals must keep enough blood in stock before emergencies happen. This is only possible when there is a steady stream of voluntary donors, not just people responding during crises.