Freebase(0.00 / 0 votes)Rate this definition: Necrosis. Necrosis is a form of cell injury that results in the premature death of cells in living tissue. Necrosis is caused by factors external to the cell or tissue, such as infection, toxins, or trauma that result in the unregulated digestion of cell components.
Staph bacteria are commonly carried on the skin or in the nose of healthy people. MRSAâmethicillin-resistant Staphylococcus aureusâis a type of staph that is resistant to antibiotics called beta-lactams. In the past the majority of MRSA infections occurred among patients in hospitals or other health care settings.
What is methicillin-resistant Staphylococcus aureus (MRSA)? Methicillin-resistant Staphylococcus aureus is a type of staphylococcus or staph bacterium that is resistant to many antibiotics. Staph bacteria, like other kinds of bacteria, normally live on your skin and in your nose, usually without causing problems. But if these bacteria become resistant to antibiotics, they can cause serious infections, especially in people who are ill or weak.