mercer c.d. ip staph and there are others - super-bugs this time on the programme, how they got to super and the dangers to you on "inside story". let's begin a look with a doctor infectious disease specialist from the mao clinic. welcome to the programme. >> thank you so much for having me. >> what does cre do inside the body that makes you ill or could threaten your life? >> what it means is it's a bacteria that is resistant to one of the really last lines of defense in terms of aind biotics, it's not just the resistance, but the bacteria. such as e-kohli can cause ure yinary tract infection, it's hard to treat it if immune to antibiotics. >> if a patient has cre in his or her system where it's not supposed to be. what is it doing inside the body? >> sure. we all have bacteria within our body. escaping and causing infection. when they set up shop and have resistance to antibiotics, when they escape those resistant bacteria can be harder to retreat than in they were the run of mill highly susceptib