This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
Nakayama strain is used for which vaccine? 
Select and explain. 
A. Typhoid, B. Chicken pox, C. Japanese encephalitis, D. Yellow fever
C: Japanese encephalitis
Answer: C: Japanese encephalitis 
Explanation: Ans. (c) Japanese encephalitisRef: Appendix-46, Types of vaccine and immunization