[in the Rickettsiaceae family, a genus of gram negative, aerobic, rod shaped bacteria often surrounded by a protein microcapsular layer and slime layer; the natural cycle of its organisms generally involves a vertebrate and an invertebrate host; species of the genus are the etiological agents of human diseases, such as typhus. ( CSP )]
UMLS (CSP) C0035583 Relation/PAR: Rickettsiales
Relation/CHD: Bartonella
Prowazekia
Rickettsia rickettsii