Hi, The factor, which causes Chronic Lymphocytic Leukemia (CLL), is unknown, but researches for possible reasons of this disease are taking place permanently. Like any other types of leukemia, this disease is noncontagious and uncommunicable. Among most of people, who were suffering from leukemia there was found no evidence that CLL is an inheritable illness or that the offspring of suffering from it people has higher risk to become ill.
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