MRSA
MRSA is a strain of Methicillin-resistant Staphylococcus aureus. This is a bacterium which causes infections in different parts of the body. It is tougher to treat than other strains of Staphylococcus aureus – or 'staph' – because it is resistant to some commonly used antibiotics. In fact, it is now resistant to all forms of penicillin and cephalosporin.