A clinical study was carried out on 104 cases of Korean Hemorrhagic Fever who were admitted to Chungnam National Unversity Hospital from Januray 1982 to December 1988. 104 cases among the patients were confirmed -by serologic test.
The results were as follows：
1. The peak monthly incidence was November. The peak age incidence were 5th and 6th decade and male to female ratio was 2.5：1. The occupations of the patients were variable, but farmer was the most prevalent.
2. Most patients entered hospital in oliguric stage and the mean duration from onset of symptoms to admission was 5 days. 11 out of 104 patients were non-oliguric stages.
3. The frequent and pertinent symptoms and signs were fever, chills, general myalgia, abdominal pain, back pain, abdominal and costovertebral angle tenderness and bleeding tendencies.
4. The important laboratory findings for diagnosis were leukocytosis, thrombocytopenia, elevated blood urea nitorgen and creatinine.
5. Hypertension was noticed transiently in 42 cases (40.4％). Other complications were infection, melena, pleural effusion, convulsion and premature repture of membrane in pregnancy in 4, 3, 3, 2 and 1 case respectively.
6. 26 patients who showed severe acute renal failure were treated with acute hemodialysis while 78 patients with conservative treatment. All patients except one who developed unidentified cerebral dysfunction were discharged with improvement.
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