This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Influenza, Subject name: Social & Preventive Medicine
Vaccine administered by following route is 
Select and explain. 
A. Typhoral live, B. H1n1 killed, C. H1n1 live, D. Yellow fever live
C: H1n1 live
Answer: C: H1n1 live 
Explanation: Hlnl live (Intranasal route)