Methicillin-resistant Staphylococcus aureus is a bacterium responsible for several difficult-to-treat infections in humans. It is also called multidrug-resistant Staphylococcus aureus and oxacillin-resistant Staphylococcus aureus. Chances are you’ve got these bacteria on your skin, in your nose and in your throat. Most of the time the bacteria are harmless or may cause mild skin irritations, but a staph infection can become deadly if it gets into your body. Make a habit of washing your hands, and keep any wounds covered with clean bandages. And never hesitate to get tested as it could be matter of life and death. Keep an eye on minor skin problems, such as pimples, cuts, scrapes and bug bites. Make a quick call to your doctor if they become infected.