MRSA bacteria strain is seen in a petri dish in a microbiological laboratory in Berlin…MRSA (Methicillin-resistant Staphylococcus aureus) bacteria strain is seen in a petri dish containing agar jelly for bacterial culture in a microbiological laboratory in Berlin March 1, 2008. MRSA is a drug-resistant ”superbug”, which can cause deadly infections. REUTERS/Fabrizio Bensch (GERMANY)