Airbourne cross infection possibilities in the operating room.

This film visualises human convective air flows with Schlieren photography, dramatically highlighting the airborne route of infection with laboratory models and experiments. Other techniques are used to illustrate the unseen hazards of airborne infections that may be acquired in the operating room. Methods to evaluate clothing are shown; a dispersal chamber is particularly innovative. The importance is emphasised of maintaining the fine balance between low rates of wound sepsis through airborne cross infection and user contact.