Just in from the New York Times:

You’ve probably been cleaning your hands all wrong. They must be filthy.

Scientists have found that a common technique for applying hand sanitizer, one that is even recommended by the Centers for Disease Control and Prevention, is inferior to an alternative method with twice as many steps.

The C.D.C. way:

Step One: Apply the sanitizer to one palm.

Step Two: Rub both palms together.

Step Three: Rub product over your hands until dry.

In a study published in the journal of the Society for Healthcare Epidemiology of America, scientists in Scotland found that an alternative technique, recommended by the World Health Organization, was significantly more effective in reducing the median bacteria count on participants’ hands.

It was also more time-consuming. The C.D.C. method takes 35 seconds on average to complete; the alternative, 42.5 seconds.

You may notice that while the three-step instructions include applying the sanitizer and allowing your hands to dry, the six-step technique ignores both actions. (The diagramed W.H.O. method actually contains 11 intensive steps. The study only counted Steps 2 through 7.)

Here’s how you do it the (much more laborious) W.H.O. way:

Step One: Rub palms together.

Step Two: Rub each palm front to back over the back of the other hand, interlacing fingers

Step Three: Twist palms with fingers interlaced, and rub between fingers

Step Four: Interlock your fingers, (thumbs should be on opposite sides), and twist again, this time, backs of fingers against palms

Step Five: Clasp your left thumb in your right hand and move thumb in circular motion — then switch thumbs.

Step Six: (Still with us?) Press your right fingers together and rub them in a circular motion on your left palm, then switch. You’re done!

Jacqui Reilly of the Glasgow Caledonian University, the lead author of the study, which focused on health-care workers, stressed that the way the steps were counted emphasized the precision of the superior W.H.O. technique. “The difference between them is that the W.H.O. guidance gives you six maneuvers to do, instead of just saying, ‘Apply it all over your hands,’ ” she said.

Hand hygiene, she added, remained “the single most important intervention that you can do to prevent health care-associated infection but also to protect yourself and your family from infections and viruses.”

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The purpose of art is washing the dust of daily life off our souls. - Pablo Picasso