Methicillin-resistant Staphylococcus aureus (MRSA) is a type of bacteria that has developed resistance to many antibiotics, including methicillin. This makes infections caused by MRSA more difficult to treat compared to other strains of Staphylococcus aureus. MRSA is commonly found in healthcare settings but can also occur in the community. MRSA infections can lead to various health issues, ranging from skin infections to more severe conditions like pneumonia or bloodstream infections. It spreads through direct contact with an infected person or contaminated surfaces, making hygiene and proper wound care essential for prevention.