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.
1 MRSA, or Methicillin-resistant Staphylococcus aureus, is a common strain of bacteria found in most animals. 2  Ordinarily a staph infection is harmless and easily treated, however, when these bacteria undergo genetic mutation they become resistant to even the strongest antibiotics available. Ordinarily a staph infection is harmless and easily treated, however, when these bacteria undergo genetic mutation they become resistant to even the strongest antibiotics available. 2  This makes them potentially deadly. 3  Initially a MRSA infection looks like any other skin infection.