Peracute cases carry a very poor prognosis and die within hours. The prognosis for acute cases is variable from guarded to good. It is also possible that recovered patients may develop chronic renal or hepatic disease. | Peracute cases carry a very poor prognosis and die within hours. The prognosis for acute cases is variable from guarded to good. It is also possible that recovered patients may develop chronic renal or hepatic disease. |