Hand-washing: Do's and don'ts - Mayo Clinic- medical hand washing purpose ,Hand-washing: Do's and don'ts Hand-washing is an easy way to prevent infection. Understand when to wash your hands, how to properly use hand sanitizer and how to get your children into the habit.Hand Hygiene in Healthcare Settings | CDCPracticing hand hygiene is a simple yet effective way to prevent infections. Cleaning your hands can prevent the spread of germs, including those that are resistant to antibiotics and are becoming difficult, if not impossible, to treat. On average, healthcare providers clean their hands less than half of the times they should.