One hundred and fourteen patients with surgical infection were studied 65 patients of these had intraabdominal abscess, and the remainders had wound infection. The patients surveyed were admitted .at the department of general surgery in Chungnam National University Hospital during the period from April 1981 to March 1984.
The author has analyzed clinically the cases with respects of age, sex, primary diseases and has investigated the causative agents of surgical infection, and also studied drug resistance of isolated strains to the various antibiotics by antibiotic susceptibility test.
The results were summarized as follows:
1. In the distribution of age, the fifties ana sixties (48.2%) were two times as many as the thirties and forties (28.1%). The prevalence rates were 43.0% in summer and 14.9% in winter.
2. The commonest primary disease in intraabdominal abscess and wound infection was perforated appendicitis and periappendiceal ahscess (36.9% and 35.7%, respectively).
3. Positive culture were obtained in 84.2% of 114 patients. Of these, intraatdominal abscess was 89.2% and wound infection was 77.6%. Aerobes isolated were 18.5%, aerobes and anaerobes isolated concomitantly were 29.2%, and anaerobes isolated were 7.3%.
4. Total 193 strains were isolated from patients with surgical infection. Of these, aerobes were72.6% and anaerobes were 27.45. The commonest organism was Escherichia coli as 36.9%, thenext was Bacteroides as 18.5%, the others isolated were Klebsiella as 11.3%, and Proteus as 10. l%, etc.
5. E. coli was 48.1% of isolated aerobes and Bacteroides fragilis was 50.0% of isolated anaerobes
6. Isolatea strains of E. coli and Bacteroides fragilis from patients with surgical infection were resistant to the most of antibiotics such as erythromycin, kanamycin, lincomycin, neomy-
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