A ten-year survey of bacteriuria in the Osaka university hospital

10 consecutive years of observation of the laboratory data of quantitative urinary bacterial culture in the Central Clinical Laboratory of Osaka University Hospital was made. The marked rise of Pseudomonas and other Enterobacteriaceae was clearly demonstrated. The difference in bacterial species in bacteriuria between inpatients and outpatients strongly suggests that the origin of infection was quite different. The disappearance of Staph. aureus as a causative agent was also demonstrated.