In case you didn't learn this LONG before Covid-19, hand air dryers that are in public restrooms to dry your hands after washing should be avoided at all costs. According to a Harvard Health blog article dated May 11, 2018, bacteria is multiplied from the bathroom air which dirties up your hands when you use the hand air dryers on your hands (with only minimal amounts of bacteria on the nozzles of the air dryers). According to this blog, researchers attached high-efficiency particulate air (HEPA) filters to the dryers, which would eliminate most of the bacteria from the air passing through the dryer. When they exposed petri dishes to air from the hand dryers again, the quantity of bacteria in the dishes had fallen by 75%. They concluded that most of the bacterial splatter from the hand dryers had come from the washroom air such as when toilets are flushed with an open lid. Carly's comment (the founder, implementor, & manager of this Covid blog you're reading): I'm ...
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