Egyesített Szent István és Szent László Kórház, Budapest
Immunosuppressive therapies, which were used in the past few years, have been causing different kinds of immunosuppression. In case of impaired cellular immunity, there is an increased risk of having the reactivation of latent viral infections. Certain viral infections or viral reactivations can be life threatening for patients with malignant diseases. Mild viral infections during chemotherapy can also disadvance the tumor therapy, which could affect the chance of recovery in a negative way. This is the reason, why the possibility of carrying viral infections or viral reactivations should be taken into consideration even in patients with solid tumor. Due to this, risk adaptive prevention strategies, and in certain cases, early antiviral therapies are needed.