As we had a chance to move in the new Nagasaki University hospital building having twelve stories with full air conditioning system in August 1976 from the old hospital, we investigated the bacterial distribution in the both hospital buildings for the purpose of analysis of nosocomial infections. In the new hospital, the bacterial distribution and changes of flora were continuously examined. The results were as follows:
1) Many species of bacteria were isolated most frequently in the tuberculous ward in the old hospital bulding.
2) Although Pseudomonas aeruginosa and Serratia marcescens were isolated from the various places in the old hospital building, it was 18 months later when these organisms were isolated for the first time in the new hospital.
3) There was a tendency that the Enterobacteriaceaye and Pseudomonas aeruginosa were obtained from the sickward at first and spreaded into the nurse station in the new hospital. The consultation room was most polluted in the out patient clinic.
4) A washing stand was proved to be contaminated at the earliest time in the sickroom.
5) Enterobacteriaceae and Ps. aeruginosa were frequently isolated from the moist places and on the other hand glucose nonfermentative gram negative bacilli except Ps. aeruginosa were isolated even from the dry places.
6) G-serotype of Ps. aeruginosa was most frequently isolated from the places of the old hospital and the clinical materials and the strains from the old tuberculous ward were all G-type.
View full abstract