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
Post exposire prophylaxis is indicated in- 
Select and explain. 
A. HBV, B. Rabies, C. Diphtheria, D. Measles
A: HBV
Answer: A: HBV 
Explanation: Simultaneous administration of HBIG and hepatitis B vaccine is more efficacious than HBIG alone. This combined procedure is ideal both for prophylaxis of persons accidentally exposed to blood known to contain hepatitis B virus and for prevention of carrier state in the new born babies of carrier mothers (refer pgno 217 park 23 rd edition)