The Bacterial Contamination Status of Elevator Buttons and Library Computers in Dr. Mohammad Kermanshahi Hospital, Kermanshah, Iran, in 2015

According to epidemiological studies, environmental surface such as hospital equipment has role in the transmission of the microorganisms. It probably has positive influence on increase in number of ýnosocomial infections. This study aimed to assess the bacterial contamination status of elevator buttons and library ýcomputers in Dr. Mohammad Kermanshahi hospital, Kermanshah City, Iran.
In this cross-sectional study, 71 samples were taken from the elevator buttons, keyboards, mouses, and power buttons of the computers in the library of Dr. Mohammad Kermanshahi hospital. In the laboratory, using standard diagnostic methods of bacteriology, including staining, biochemical tests, and culture in differential, selective, and specific media, Gram-positive and Gram -negative bacteria were isolated.
Findings: All 71 samples were contaminated by bacteria. In the elevator buttons samples, spore-forming Gram-positive bacilli (Bacillus) with a frequency of 48.21 percent and Klebsiella pneumoniae with 3.57 percent had the highest and lowest frequencies, respectively. 66.66 percent of the computer samples contaminated to coagulase-negative staphylococcus, which 6.66 percent of them were coagulase-positive staphylococcus (aureous) and Micrococcus.
Due to the isolation of pathogenic and non-pathogenic bacteria from both groups’ samples, the need for personal hygiene practice, and principles of appropriate and regular disinfection of tools and hospital equipment surfaces are of great importance to reduce bacterial contamination and the incidence of nosocomial infections.