It's one of the easiest ways to protect ourselves from spreading germs, and some of the most common advice from medical experts and concerned parents ...
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The field of medicine has understood the importance of hand washing for almost 200 years. The fact that you need signs, though, suggests that not everyone is washing their hands all the time. What kinds of signs are likely to be most effective?
Is it possible that health workers might be more motivated by messages that emphasize patients' welfare rather than their own?
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