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
Trench fever is caused by - 
Select and explain. 
A. Bartonella Quintana, B. Coxiella burnetii, C. Rickettsia akari, D. Rickettsia conori
A: Bartonella Quintana
Answer: A: Bartonella Quintana 
Explanation: Ans. is 'a' i.e., Bartonella Quintana * Trench fever, also called 5-day fever or quintan fever, is caused by Bartonella quintana (Rochalimaea quintana).* The human body louce (Pediculus humans corporis) is the vector and humans is the only known reservoir.