Bartonellosis (Oroya fever or Carrion’s disease) is caused by the rickettsial organism Bartonella bacilliformis and occurs only in Andean mountain regions of South America. The vector is the sandfly Phlebotomus (species). The organism is related to Rochalimaea quintana, the rickettsial etiology of trench fever and therefore is also related to Rochalimaea henselae, one of the […]