Bartonella quintana causes -: (A) Trench fever, (B) Scrub typhus, (C) Endemic typhus, (D) Epidemic typhus
Answer is A. Trench fever, also called 5-day fever or quintan fever, is caused by Bartonella Quintana (Rochalimaea Quintana).
 The human body louse (Pediculus humanus corporis) is the vector and humans is the only known reservoir