Good morning all.
I got a strain of Proteus mirabilis on Vitek II and it was an XDR strain. The cefepime has < 1 result but the machine made a star and consider as resistant. Manually it is sensitive by disc diffusion. I revised CLSI for any special case for Cefepime with Proteus, I could not find anything except for being SDD (susceptible dose dependent) Please any one has an idea, why?