sentences:  The scrub typhus group has been reclassified as a related new genus, "Orientia", but they still are in the order Rickettsiales and accordingly still are grouped with the rest of the rickettsial diseases.Rickettsias are more widespread than previously believed and are known to be associated with arthropods, leeches, and protists.Divisions have also been identified in the spotted fever group and this group likely should be divided into two clades.