In the first part, cleaning is compared to disinfection under laboratory conditions with a surface contamination of approximately 10
3 cfu per 100 cm
2. For eight test organisms, the residual contamination after decontamination is determined by contact plates. For five of these test organisms, the residual contamination after cleaning is under 1% in all experiments; for the other three test organisms, it is 1,66 %, 2,04 % and 4,34 % at most, respectively. After disinfection, there is no residual contamination observed. In the second part, cleaning is compared to disinfection for routine surface decontamination under real-life conditions in an intensive care unit by sampling of surfaces of the patients immediate environment with contact plates. Statistically, the difference between the decontamination methods with regard to the percentage of samples showing growth of potentially pathogenic germs is not significant. In the third part, consultations are carried out in five representatively selected wards to optimize the use of disinfectants. After the consultations, the consumption of disinfectants of these wards decreased.
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In the first part, cleaning is compared to disinfection under laboratory conditions with a surface contamination of approximately 10
3 cfu per 100 cm
2. For eight test organisms, the residual contamination after decontamination is determined by contact plates. For five of these test organisms, the residual contamination after cleaning is under 1% in all experiments; for the other three test organisms, it is 1,66 %, 2,04 % and 4,34 % at most, respectively. After disinfection, there is no residual...
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