<prompt> Which of the following statements is true about endemic typhus -Is caused by R. RickettsiiIs transmitted by the bite of fleasHas no mammalian reservoirCan be cultured in chemically defined culture medium  <response>: Endemic or flea-borne typhus or murine typhus is transmitted by bite of flea. Rats are the reservoir. Causative agent is Rickettsia typhus. Park;s textbook of preventive and social medicine,K.Park,23rd edition,page no:300 p 