<prompt> Which group of organism is responsible for transmitting endemic typhus?FleaTickMiteMosquito  <response>: The etiologic agent of endemic typhus murine typhus fever or fleaborne typhus is Rickettsia typhi, a Gram-negative bacterium and obligate intracellular pathogen. Reservoirs include rats, mice, possibly other mammals, and infected rat fleas. Endemic typhus has a worldwide occurrence. 