Rabies shot reveals immune secrets in CAR-T cancer survivors

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * CARTx RECIPIENTS: Patients must be capable of understanding and providing a written informed consent * CARTx RECIPIENTS: Patients must be 18 years of age or older, of any gender, race or ethnicity * CARTx RECIPIENTS: Patients must have had relapse-free survival for \>= 6 months after receiving CARTx for B-cell malignancies * CARTx RECIPIENTS: Platelet count \> 30,000 / mm\^3 * HEALTHY CONTROLS: Patients must be capable of understanding and providing a written informed consent * HEALTHY CONTROLS: Patients must be 18 years of age or older, of any gender, race or ethnicity Exclusion Criteria: * CARTx RECIPIENTS: Patients who have received a hematopoietic cell transplant after CARTx * CARTx RECIPIENTS: Previously received 1 or more rabies vaccines prior to the first vaccine visit * CARTx RECIPIENTS: Patients who have received lymphodepleting therapies after CARTx and within the past 6 months * CARTx RECIPIENTS: Patients with signs or symptoms of active infection * CARTx RECIPIENTS: Patients who are pregnant or breastfeeding * CARTx RECIPIENTS: Patients with previous known allergies to any component of the vaccine * CARTx RECIPIENTS: Patients who have previously experienced a reaction to any vaccine that required medical attention * CARTx RECIPIENTS: Study participants who report a severe adverse event following the first rabies vaccine will not be eligible for a second dose * CARTx RECIPIENTS: Receiving corticosteroids \> 0.5 mg/kg/day prednisone equivalence in the 7 days prior to first or second vaccination * HEALTHY CONTROLS: Previously received 1 or more rabies vaccines * HEALTHY CONTROLS: Chronic illness * HEALTHY CONTROLS: Signs or symptoms of active infection * HEALTHY CONTROLS: Pregnant or breastfeeding * HEALTHY CONTROLS: Patients with previous known allergies to any component of the vaccine * HEALTHY CONTROLS: Previous reaction to a vaccine that required medical attention