An abbreviation of Methycillin-Resistant STAPHYLOCOCCUS AUREUS. This is a type of the BACTERIUM known as Staphylococcus aureus that has developed a resistance to the antibiotic methycillin. MRSA is carried normally in the nose and throat of a small...

Methicillin-resistant Staphylococcus aureus (MRSA) (usually pronounced in short as "Mursa" in American English, spelled out as M-R-S-A in British English), is a bacterium responsible for difficult-to-treat infections in humans. It may also be referred...