Proper hand washing can reduce the spread of infectious diseases by half

• Palms - Rub hands palm to palm
• Backs of the hands - Right palm over left dorsum with interlaced fingers and vice versa
• Between the fingers - Palm to palm with fingers interlaced
• Fingers interlocked - Backs of fingers to opposing palms with fingers interlocked
• Thumbs - Rotational rubbing of left thumb clasped in right palm and vice versa
• Under the nails - Rotational rubbing backwards and forwards with clasped fingers of right hand in left palm and vice versa