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.
You and Your Family > Illness and Disease > Antibiotic Resistance > MRSA. Methicillin-resistant Staphylococcus Aureus (MRSA) is a type of bacteria that are resistant to certain antibiotics. When bacteria are resistant, it means that they can't be killed by common antibiotics. Many people have bacteria that don't cause any harm while they are on the skin outside the body.