A virus can spread around a whole building within two hours of coming into contact with just one surface, a new study has found.
A team at the University of Arizona, Tucson found that when a virus, for example the norovirus, contaminates a single doorknob or elevator button it spreads rapidly through entire office buildings, hotels or hospitals.
The team, led by microbiologist Charles Gerba, used bacteriophage MS-2 as a surrogate for the human norovirus because it is similar in shape, size and resistance to disinfectants
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