As Rap said, washing one's hands is the one best way to keep from spreading germs.

Sage, I heard a health expert on TV make that point. He said that if we saw what he has seen under his microscope we would be scouring not only our own hands but standing there and insisting that others do the same.

He also said that upon exit one should pull open the door with the paper towel we dried with - and then drop the towel outside the door. The interviewer said, But what if there's no receptacle there?

The health official said, Trust me. They will put one there.