The Risk of Exposure to Infectious Bacterial Bioaerosols in Different Hospital Wards: A Case Study

Background: Biological aerosol particles smaller than 10 microns in diameter are among the health concerns hospitals since they remain air for a long time and infectious easily transported. We aimed to investigate concentration of Escherichia coli Staphylococcus aureus bioaerosols evaluate their risk indoor environment different wards Khatam al-Anbia hospital, Jask, Iran, 2020. Methods: This descriptive-analytical study was performed by collecting analyzing 50 samples from seven hospital wards. The active sampling according standard method National Organization Occupational Health Safety pump with flow rate 28.3 L/min minutes. Blood agar eosin methylene blue were used detect bacteria. Then, Monte Carlo simulation technique assess microbial risk. Results: S. 4.81 18.11 CFU/m3 . lowest highest concentrations operating room general emergency wards, respectively, while E. inpatient (0 ) ward (21.22 ), respectively. daily observed neonatal (8.03×10-4 3.02×10-4), Moreover, found male (zero 7.21×10-3), Conclusion: In some infection be higher acceptable value. Since high airborne bacteria can play an important role producing nosocomial infections patients staff, it is necessary officials take corrective measures equipment control, use proper ventilation systems closely monitor disinfection process.