For what reason can't surgeons touch their other hand without gloves on?

Using surgical glove: Gloves are used to protect patients - the one that you are touching and the next patient you touch. Sterile gloves are used to handle sterile surfaces - like when an operation is being done. Regular gloves are used to keep from getting germs on your fingers. There is a routine that surgeons learn to put gloves on and to take off to keep from contaminating hands.