The Microbiological Quality of Air ln The Operating Room. Deaths from nosocomial infections reached 60,000 per year and spending an additional $ 4 service charge Miliard year. The results of the survey (WHO, 2001) suggests as much as 8.7% of hospital patients had nosocomial infections and more than 1.4 million people suffer from complications due to nosocomial infections. Until now, this has ne…