This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: VBDs, Arboviral & Viral Infections, Surface Infections, Subject name: Social & Preventive Medicine
A man presents with fever and chills 2 weeks after a louse bite. There was a maculo-papular rash on the 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: Epidemic typhus is transmitted by louse. Scrub typhus and Rickettsial pox are transmitted by mites Endemic typhus is transmitted by rat flea.