Drupal-Bibcite0<style face="normal" font="default" size="100%">Rocky Mountain spotted fever: a comparative study of the active immunity induced by inactivated and viable pathogenic Rickettsia rickettsii</style><style face="normal" font="default" size="100%">Rocky Mountain spotted fever: a comparative study of the active immunity induced by inactivated and viable pathogenic Rickettsia rickettsii</style>