system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Trench fever is caused by -
assistant
The correct answer is  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.