Infection is a serious concern when dealing with wounds. The invasion of bacteria into a break in the skin can cause countless problems. When healing a wound, one can use an "infection screen" to stave off some of the invaders.
After primary wound care/healing, visualize a mesh screen with very very tiny holes. The visualization should resemble the screens used in "energy filtration." Its intent should be to allow neutral energy to pass in/out, but to block incoming bacteria, or virii.
Set the screen upon the wound, allowing it to cover the wound completely. Give it enough energy to last for some time, and disconnect it from you. This should be sufficient to block incoming bacteria, but always be sure to include physical methods with your treatments. Best of the energies to you on your healing path.