Inclusion Criteria:  Patients must have active solid tumor malignancy diagnosis On active chemotherapy Received two prior SARS-COV2 Pfizer vaccines Age ≥ 18 years Ability to understand and the willingness to sign a written informed consent Agree to comply with study procedures Subjects previously enrolled under the main study  Exclusion Criteria:  History of HIV or organ/bone marrow transplant Actively receiving immunotherapy On active, chronic immunosuppression (>10 mg daily dose of prednisone equivalent) Currently incarcerated or residence of another state Speaks a language other than English.