title: Rickettsiae: a new vaccine for Rocky Mountain spotted fever.
mesh_terms: D000818:Animals; D001428:Bacterial Vaccines / Q000627:therapeutic use; D006801:Humans; D012284:Rickettsia rickettsii / Q000276:immunology*; D012373:Rocky Mountain Spotted Fever / Q000517:prevention & control*
chemical_list: D001428:Bacterial Vaccines