This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Epidemiology, Subject name: Social & Preventive Medicine
A person is on intensive chemotherapy; which vaccine is contraindicated in this circumstance? 
Select and explain. 
A. MMR, B. Hepatitis B, C. Pneumococcus, D. DPT
A: MMR
Answer: A: MMR 
Explanation: Park's textbook of preventive and social medicine 23 edition. *Measles and MMR should not be administered on those on treatment with high dose steroids, alkylating agents or anti metabolites or under immunosuppressive therapeutic radiation.