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Pandrug-resistant (PDR)

Definition:

Non-susceptibility to all agents in all antimicrobial categories (i.e. bacterial isolates are not susceptible to any clinically available drug).

The prevalence of PDR bacteria is difficult to judge as isolates are rarely assessed against all possible antibiotics. However, PDR Gram-negative bacteria have been reported in more than 20 countries in all regions of the world. Mortality in patients infected with these bacteria is high (around 50% on average) but very variable.

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