<unk>  <unk> , multidrug<unk>  or multiresistance is antimicrobial<unk>  shown by a species of microorganism to at least one antimicrobial<unk>  in three or more antimicrobial categories. Antimicrobial categories are classifications of antimicrobial agents based on their mode of action and specific to target organisms. The<unk>  types most threatening to public health are<unk>  bacteria that resist<unk>  antibiotics; other types include<unk>  viruses, parasites (resistant to<unk>  antifungal, antiviral, and antiparasitic<unk> s of a wide chemical variety). Recognizing different degrees of<unk>  in bacteria, the terms extensively<unk> -resistant (XDR) and pandrug-resistant (PDR) have been introduced. Extensively<unk> -resistant (XDR) is the non-susceptibility of one bacteria species to all antimicrobial agents except in two or less antimicrobial categories. Within XDR, pandrug-resistant (PDR) is the non-susceptibility of bacteria to all antimicrobial agents in all antimicrobial categories. The definitions were published in 2011 in the journal Clinical Microbiology and Infection and are openly accessible.
Multiple drug resistance
Drug resistance
Antimicrobial resistance
Multiple chemical sensitivity
Chronic toxicity
Multidrug-resistant bacteria
Transplant benefit
Progressive disease