<prompt> Trench fever is caused by -Bartonella QuintanaCoxiella burnetiiRickettsia akariRickettsia conori  <response>: 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. 