Leukemia is not contagious and therefore is not contagious. The causative factors of leukemia include certain viral infections, genetic factors, radiological factors, chemical factors and so on. Researchers have found that viral infections such as EBV can induce the occurrence of leukemia. In addition, engaging in radioactive work, long-term exposure to small-dose radiation intake, and certain chemicals such as benzene and ethylenediamine can also increase the incidence of leukemia. Investigations of leukemia families have found a close link between chromosomal and genetic abnormalities. This shows that leukemia is not contagious. If you find that your body has certain symptoms, such as bleeding, anemia, etc., you should not blindly self-diagnosis, should go to the hospital in a timely manner, under the guidance of the physician to make a clear diagnosis, so as not to delay the condition.