Public computer surfaces are reservoirs for methicillin-resistant staphylococci.
The role of computer keyboards used by students of a metropolitan
university as reservoirs of antibiotic-resistant staphylococci was
determined. Putative methicillin (oxacillin)-resistant staphylococci
isolates were identified from keyboard swabs following a combination of
biochemical and genetic analyses. Of 24 keyboards surveyed, 17 were
contaminated with staphylococci that grew in the presence of oxacillin
(2 mg l-1). Methicillin (oxacillin)-resistant Staphylococcus aureus (MRSA), -S. epidermidis (MRSE) and -S. hominis
(MRSH) were present on two, five and two keyboards, respectively, while
all three staphylococci co-contaminated one keyboard. Furthermore,
these were found to be part of a greater community of
oxacillin-resistant bacteria. Combined with the broad user base common
to public computers, the presence of antibiotic-resistant staphylococci
on keyboard surfaces might impact the transmission and prevalence of
pathogens throughout the community.
Thanks to Monique van Hoek for the pointer.
I doubt keyboards are any more contaminated than doorknobs, public telephones, water-fountain handles, etc.
Keyboards are tougher to clean than doorknobs, telephone handsets and water-fountains, so they may well be worse.
See this link for washable keyboards, specifically addressing the health risks:
http://www.unotrononline.co.uk/
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