Efficacy of Disinfectants on Bacteria; Case Study of Isfahan Hospitals

Aims: The internal unit and ICU of hospitals are a suitable environment for growing of bacteria such as Staphylococcus epidermidis, Pseudomonas and Acinetobacters. The aim of this study was to evaluate the efficacy of using disinfectants on bacterial remove in Isfahan City, Iran, hospitals. Instrument Methods: This descriptive study was performed in Isfahan City, Iran, hospitals in 2015. 200 samples were taken from random locations of the hospitals. Sampling was carried out at the end of the business day and before disinfecting the surfaces with sterile cotton swabs moistened by sterile saline. After identification of bacteria, the numbers of bacterial colonies were counted before disinfection in 1ml (CFU/ml). Findings: The highest isolates were detected from emergency unit before disinfection included Pseudomonas aeruginosa, Staphylococcus spp., Escherichia coli, Proteus spp., Klebsiella spp., Acinetobacter spp., and Enterobacter spp. 255 cases of bacteria were found at 27 positive samples. The most common isolated bacteria after disinfection were Staphylococcus epidermidis (76 cases), E. coli (42 cases) and Micrococcus luteus (39 cases). Conclusion: The disinfecting process of Isfahan Hospitals is effective in removing bacterial infections.