Bacterial contamination of computer keyboards and mouse

Hassan Abdul Rahman, Ramzia

	Bacterial contamination of computer keyboards and mouse
Tikrit Journal of Pure Science
Article 1, Volume 19, Issue 5, 2014, Pages 18-22
Author
Ramzia Hassan Abdul Rahman
Abstract
Abstract A study was carried out to isolate and identify microorganism associated with computer keyboards and mice. A total of (250) samples were collected from two different objects (150) samples from the keyboards and (100) samples from the mice. Samples were collected from different Computer centers places some computer laboratories (multiple- user) in college of medicine, Al-Batol Teaching Hospital, Al-Jamhory Teaching Hospital in Mosul City and Laptops of Single –user (staff rooms).The collected samples were inoculated on Nutrient agar,, Salmonella –Shighella agar, Blood agar, Chogulate agar ,Maconkey agar ,Brucella agar and Minnitol Salt agar .The isolates obtained were examined and identified by colonial morphology; biochemical characteristics and Gram stain, 99.2% of total samples collected were contaminated with mixed bacterial growth. The bacteria that have been isolates includes, Gram positive bacilli, Gram negative bacilli, Staphylococcus aureus , Staphylococcus epidermis ,Enterococcus, Escherichia coli, Streptococcus.The study indicated that the number of microorganisms present on multiple-user computer keyboard and mice were greater than the single user computer keyboards and mice. The presence of pathogenic and commercial bacteria on the computer keyboards and mice indicates that they might acts as environmental vehicles for the transmission of potentially pathogenic bacteria. Our data recommended that regular cleaning and disinfection of the different parts of computers must be used to reduce the microbial load especially for multiple user work station

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