This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable diseases, Subject name: Social & Preventive Medicine
A man presents with fever and child 2 weeks after a louse bite. There was maculo-papolar rash on th trunk which spread peripherally. The cause of this infection can be - 
Select and explain. 
A. Scrub typhus, B. Endemic typhus, C. Rickettsial pox, D. Epidemic typhus
D: Epidemic typhus
Answer: D: Epidemic typhus 
Explanation: <p> Epidemic typhus Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:301. <\p>