Hello, I am new to this forum and signed up to ask this specific question. From what i understand of evolution(which i am not trying to discredited here btw ) mutations are caused by either chance or adaption which then through natural selection favorable mutations are basically breed into the standard population, please correct me if im wrong. And from this immunizations cause a mutation by exposure to the disease, this mutation being favorable. But why do we keep immunizing generation after generation, if you had two parents with the mutation caused by the immunization would'nt it be passed to the child and there would be no need for the child to be immunized? Thanks in advance.