Report Card: Who Has Dirtiest Hands

Credit: Dreamstime
(Image credit: Dreamstime)

Students and dads have the dirtiest hands, according to a new ranking of who washes their hands regularly.

And school nurses and other health professionals have the cleanest hands, according to the hygiene grades in the third Clean Hands Report Card issued by the Soap and Detergent Association.

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Robin Lloyd

Robin Lloyd was a senior editor at Space.com and Live Science from 2007 to 2009. She holds a B.A. degree in sociology from Smith College and a Ph.D. and M.A. degree in sociology from the University of California at Santa Barbara. She is currently a freelance science writer based in New York City and a contributing editor at Scientific American, as well as an adjunct professor at New York University's Science, Health and Environmental Reporting Program.