Hand Dryers In Public Restrooms May Spread Bacteria To Your Hands

Hand Dryers In Public Restrooms May Spread Bacteria To Your Hands

"Bacteria in bathrooms will come from feces, which can be aerosolized a bit when toilets, especially lidless toilets, are flushed", study author Peter Setlow told Newsweek.

The results of the study, which came from scientists comparing normal bathroom air in 36 restrooms at the University of CT to the air coming from dryer nozzles, indicated that more bacterial colonies developed in samples exposed to the hand dryer air. That bacteria then circulates in the air to then be sucked up, warmed up, and blown out of the dryer.

As it turns out though, using a hand dryer might actually be far more disgusting. according to new research anyway. Letting your hands air dry is also a more sanitary option. These results indicate that many kinds of bacteria, including potential pathogens and spores, can be deposited on hands exposed to bathroom hand dryers, and that spores could be dispersed throughout buildings and deposited on hands by hand dryers.


In theory, adding high-efficiency particulate air (HEPA) filters should stop bacteria particles from spraying over your newly cleaned hands.

The study shows if hand dryers are retrofitted with HEPA filters, it can reduce the spread of the bacteria four-fold. The study by researchers at the University of Connecticut School of Medicine appeared in the latest issue of the journal Applied And Environmental Microbiology.

Researchers say the hand dryers are not only just spreading bacteria to your hands. This is then dried and sprays on the hands of the user finds that study.

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