Secondary Immune Deficiency (like Chemoterapy-Induced) Means no Vaccines

Abstract

Secondary immune deficiency is the immune deficiency caused by chemotherapy or other drugs taken for a long time [1]. It should be self-understanding that when the immune system is weakened by chemotherapy or prolonged usage of a drug or drugs, the doctor shouldn’t recommend immunizations because if the immune system is weaker, it should not be asked to deal with more and more new viruses, even when these viruses are weakened as they are in the vaccines.