RecruitingClinical trialVaccine Responses in Patient With Multiple Myeloma and Non-Hodgkin Lymphoma After CAR-T TreatmentThis study evaluates immune responses after CAR-T therapy to find out if CAR-T therapy reduces the effectiveness of the vaccines (vaccine immunity) against diseases such as measles, mumps and rubella, among others in patients with multiple myeloma and non-Hodgkin lymphoma.