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: Microbiology
"Endemic" typhus is transmitted by: 
Select and explain. 
A. Rickettsia prowazeki, B. Ricketssia mooseri, C. Ricketssia burnetti, D. Ehrilichia chafeensis
B: Ricketssia mooseri
Answer: B: Ricketssia mooseri 
Explanation: Ricketssia mooseri