This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
Post exposure immunization is given in -a)  Rabiesb)  Pertussisc)  Measlesd)  Yellow fever 
Select and explain. 
A. b, B. ac, C. ab, D. bd
B: ac
Answer: B: ac 
Explanation: None