This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable & Non Communicable Disease, Subject name: Social & Preventive Medicine
[{'content': 'All of the following are true about Epidemic typhus except \nSelect and explain. \nA. Also known as Flea born typhus, B. Causative agent is Rickettsial prowazekki, C. Vector - Louse, D. Tetracycline is drug of choice', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Rickettsial diseases Diseases Rickettsial agent Insect vectors Mammalian reservoirs 1. Typhus group a. Epidemic typhus b. Murine typhus c. Scrub typhus R. prowazekii R. typhi R. tsutsugamushi Louse Flea Mite Humans Rodents Rodents 2. Spotted fever group a. Indian tick typhus b. Rocky mountain spotted fever c. Rickettsial pox R. conorii R. rickettsii R. akari Tick Tick Mite Rodents, dogs Rodents, dogs Mice 3. Others a. Q fever b. Trench fever C. burnetii Rochalimaea quintana Nil Louse Cattle, sheep, goats Humans Also serve as ahropod reservoir, by maintaining the rickettsiae through ovarian transmission Murine typhus is also known as Endemic typhus or Flea typhus', 'role': 'assistant'}]