Microbial contamination of computer keyboards in a university setting

Am J Infect Control. 2009 Aug;37(6):507-9. doi: 10.1016/j.ajic.2008.10.032. Epub 2009 Feb 23.


The keyboards of multiple-user (student) and single-user (staff) computers located on a university campus were sampled to assess microbial contamination. The average number of microorganisms present on multiple-user computer keyboards was significantly greater than on single-user keyboards, and the number of keyboards harboring potential pathogens was also greater for multiple-user computers. It is recommended that regular cleaning and disinfection of computers be used to reduce the microbial load, especially for multiple-user workstations.

MeSH terms

  • Bacteria / classification*
  • Bacteria / isolation & purification*
  • Colony Count, Microbial
  • Computers*
  • Environmental Microbiology*
  • Humans
  • Universities