RESUMEN
Nosocomial infections become one of the most serious problems in hospitals. In ghaem hospital very good activities were performed concerning infectious control and prevention. These activities should be evaluated to improve performance and strategies. This surveillance was conducted in ghaem hospital through 1370 to 1380 to determine the efficacy of infectious control activities. Results will suggest the better strategies and recommend new policies. In this surveillance during 1370 to 1380 samples were taken from different parts of ghaem hospital. Results were classified in 4 groups: People, therapeutic instruments, non-therapeutic things and spaces. The results were recorded on specific forms and were statistically analyzed. During this 10 Years [1370 to 1380] 4028 samples were taken from hospital. From 4028 samples, 1874 samples [%46.52] were pathogenic bacteria, through those staphylococcus coagulase negative, klebsiella pneumonia,...were most frequent bacteria. Through other samples [2154 samples], 1133 samples were sterile and 1021 samples were nonpathogenic bacteria. Rate of contamination during this period from 1370 [%73.4] to 1379 [%28.3] was descending. Concerning the results of this study and other parameter, the most important and contaminated source of nosocomial infection in hospital were people [patients and healthcare workers] but people were the least frequently sampled part and spaces that had the least significant role, were the most frequently sampled part. So more attention should be paid to people. Prevalence and type of bacterial contamination in each part of hospitals depend on various factors. These factors are very important for choosing efficient infectious control policies in that part. Good performances of infectious control programs have reduced contamination rate in ghaem hospital very significantly