When can a patient who is immunocompetent now but who was on immunosuppressive chemotherapy in the past receive zoster vaccine?

A person who was on immunosuppressive chemotherapy in the past but is not expected to be immunocompromised again may follow routine recommendations for shingles vaccination at age 50 years or older. If the patient is age 19 or older and expected to require repeated exposure to immunosuppressive chemotherapy in the future, then it is preferable to vaccinate now while the patient’s immune system is more robust.