MRSA is a type of Staphylococcus aureus bacteria that is resistant to some antibiotics. It can cause skin infections and other complications, especially in people with weakened immune systems or in healthcare settings. Learn how MRSA spreads, who is at risk, and how to prevent and treat it. MRSA is a contagious, antibiotic-resistant staph infection that can become dangerous. Find out the causes and symptoms, and when to call your doctor. MRSA is mediated by the mecA gene; which is chromosomally coded. It alters penicillin-binding protein (PBP) present on S. aureus cell membrane to PBP-2a: PBP is an essential protein needed for the cell wall synthesis of bacteria. β lactam drugs bind and inhibit this protein, thereby inhibiting cell wall synthesis. The altered PBP2a of MRSA strains has less affinity for β lactam antibiotics; hence MRSA strains are resistant to all β lactam antibiotics. BORSA strains (Borderline Oxacillin ... Learn about the symptoms, causes, and treatment options for MRSA infections. Understand how to prevent complications and manage antibiotic resistance.
