This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Environment and health, Subject name: Social & Preventive Medicine
Which of the following disease is transmitted by rat flea? 
Select and explain. 
A. Trench fever, B. Chages disease, C. Oriental sore, D. Endemic typhus
D: Endemic typhus
Answer: D: Endemic typhus 
Explanation: parks textbook of preventive and social medicine 23rd edition *rat fleas are known to transmit the following diseases :bubonic plague,endemic or murine typhus,chiggerosis,hymenolepis diminuta.