Wash before and after patient contact. I carry a purell alcohol based hand cleaner with me in my pocket and use it when ever I think about it, which is often. I use the scrub sink in the OR when I am around them for the change up in cleaning solutions. It is important to not use the same stuff to clean your hands in a hospital environment or even at home. Wash your hands frequently and you will avoid most common colds, the flu, and a bunch of other stuff in the big bad world. Be careful out there folks. Oh, and get your damm flu shots.