Ehrlichiosis
Bakken JS, Dumler JS. Human granulocytic ehrlichiosis. Clin Infect Dis. 2000 Aug;31(2):554-60. Epub 2000 Sep 14.
Review article puts mortality at <1%; style="color: rgb(204, 0, 0);">
Rocky Mountain spotted fever
Kirkland KB, Wilkinson WE, Sexton DJ. Therapeutic delay and mortality in cases of Rocky Mountain spotted fever. Clin Infect Dis. 1995 May;20(5):1118-21.
Retrospective study of patients at a university hospital with RMSF. Patients who received therapy within 5 days of the onset of symptoms were significantly less likely to die than were those who received treatment after the 5th day of illness (6.5% vs. 22.9%, respectively; P < .03) [from Pubmed abstract]
Tularemia
UptoDate: Overall mortality associated with tularemia is 2 to 4 percent