[Bacterial infection agents in hospitalized patients]

During six months the pattern of microbial isolates has been analysed from 1492 urinary tract infections, from 1445 wound infections, from 451 bronchial secretions, from 3067 blood cultures, from 116 peritoneal swabs and from 39 cerebrospinal fluids. All the specimens investigated were taken from patients of surgical, neurosurgical, internal wards and two intensive care units. In total, the most frequent isolates were grampositive microorganisms like Staphylococus aureus, Straphylococcus epidermidis and Streptococcus sp. of different serotypes. Out of the Enterobacteriaceae Escherichia coli and Klebisella pneumoniae predominated followed by Enterobacter cloacae and indolnegative and -positive Proteus species. The over all isolation rate of Pseudomonas aeruginosa in nosocomial infections was about 10%. In the last time Pseudomonas maltophilia will be isolated more frequently as well as occasional Streptococcus faecium and Corynebacterium JK. Dependent from the site of infection anaerobic bacteria like Bacteroides sp., Peptococcus- and Peptostreptococcus sp. are really important in the infectious diseases. The epidemiological data should be always transmitted to the infection control board. From there preventive measures must be induced.