Thanks for your question.
Basically the recommendation is that it can be administered to persons 60 years and older in the household who are immunocompetant. However if skin lesions develop, the vaccinated persons should avoid close contact with immunocompromised persons.
So the answer to your question is that you can have the vaccination. However your wife cannot have it now, and may have it after 3 months of chemotherapy.
Please read the below link:
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