aLow risk, general contact with patients or exposure to contaminated environment, such as escorting the patients during diagnosis, triage, palpation, consultation, etc
Medium risk, direct contact with body fluid, mucosa or incomplete skin, such as oral examination, puncture, oral care, surgery, etc
High risk, there is a risk of spatter of secretions or contaminants onto the body and face of medical staff, such as oral diagnosis, endotracheal intubation, etc