MRSA Created by: Chances Steadham
Introduction • MRSA: • MRSA stands for methicillin-resistant Staphylococcus aureus. The term is used to describe a number of strains of the bacteria, Staphylococcus aureus, that are resistant to a number of antibiotics, including methicillin • Staphylococcus aureus is a group of bacteria that live on the surface of people's skin and inside the nose. It is normally harmless: most people who are carrying it are totally unaware that they have it. In fact, it is thought that up to 30% of the general UK population carries these bacteria in their nose or on their skin. • This group of bacteria can be spread quite easily from person to person through contact.
Research • Methicillin-resistant Staphylococcus aureus was discovered in 1961 in the United Kingdom. It made its first major appearance in the United States in 1981 among intravenous drug users. MRSA is often referred to in the press as a “superbug.” • In 1997, four fatal cases were reported involving children from Minnesota and North Dakota. Over the next several years, it became clear that CA-MRSA infections were caused by strains of MRSA that differed from the older and better studied health care-associated strains.
Bacteria do not have sex, but they do trade or donate bits of DNA by means of a process called conjugation. Through conjugation, a bacterium can give a bit of DNA to another bacterium that might not even be from the same species of bacteria. One bacterium can donate the genetic information (that started out as a mutation) necessary to survive an antibiotic to another bacterium, and those bacteria will survive to reproduce to create a strain bacteria where (in time) almost every member of that strain is resistant to the antibiotic. Later, members of that antibiotic resistant strain can conjugate with different bacteria from a different strain that just happens to be resistant to different antibiotics. Over several decades of antibiotic misuse, conjugation, and reproduction, a strain of bacteria that is resistant to several different antibiotics can emerge. (Hospitals are great places for genetically resistant bacteria to get passed around from person to person, where they can pick up new and different resistance to other antibiotics from other strains of bacteria).
Research • Methicillin-resistant Staphylococcus aureus (MRSA) has become a leading cause of colonization and infection in both acute and chronic soft-tissue wounds • Mrsa has been around for 20 years • Mrsa can be cured with antibiotics . • There are cures but not promise for treatments
Refrences • http://www.medicalnewstoday.com/article s/10634.php • http://blog.targethealth.com/?p=10668 • http://answers.yahoo.com/question/index ?qid=20090402193747AAOdnTD • http://www.ncbi.nlm.nih.gov/pubmed/180 91985
Published on Jan 31, 2012