Figure 2.

WHO priority list of pathogens classified from highest to lowest priority based on their antibiotic resistance levels. Many of the bacteria shown in the WHO priority list belong to ESKAPE pathogens, a group of serious life-threatening pathogens worldwide that are classified as MDR pathogens. These bacteria are Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacter bacterium types. All the ESKAPE bacteria are Gram-negative apart from Enterococcus faecium, highlighting the need to especially tackle MDR Gram-negative bacteria [13]. Figure adapted from [8].