The CBS 2 Investigators scraped, swabbed and collected grime from 12 Dyson Airblade hand dryers in the Chicago area, following the guidance and protocol set by Loyola University Medical Center’s microbiology lab.

Dr. Paul Schreckenberger and researcher Sam Collier conducted the lab tests. They found potentially harmful bacteria in most of the ones tested.

“Ten out of the 12 were grossly contaminated,” Collier says.

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