Vaccinations do not cause leukemia. Vaccination only prevents the body from being infected with various diseases and viruses. After the vaccine is injected into the human body, it induces the body to produce an immune response and produce antibodies, and the vaccination will only cause fever and other uncomfortable symptoms, which is a normal phenomenon after the vaccine is injected, so don’t worry about it. Leukemia is a malignant clonal disease of hematopoietic stem progenitor cells, due to uncontrolled proliferation of leukemia cells, differentiation disorders and stagnation in different stages of cell development, in the bone marrow and other hematopoietic tissues, leukemia cells proliferate to inhibit normal hematopoiesis, and infiltrate into other organs and tissues. The cause of leukemia is not completely clear and may be related to biological, physical, chemical, genetic factors and other blood diseases. Therefore, vaccination will not cause leukemia.