Often, staph infection does not cause any harm. This is a condition brought by a common bacteria called the staphylococcus aureus. It only gets life-threatening when the staph bacteria enter the body and quickly multiplies. In this article, we will discuss everything about staph infection, when to go to hospital, infection symptoms, risk factors, causes, and many more. Staph infections are contagious and can be passed on through the mouth, so Glenmore Park-based clinic Bright Dental Group recommends avoiding sharing utensils, oral care products, and kissing someone with the infection.