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Phylogenetic tree of 416 P. aeruginosa strains collected from 10 tertiary hospitals in Guangdong, China, from 2017 to 2020. Circle 1 depicts strains isolated from five municipal cities in Guangdong, China. Circle 2 denotes 10 different investigating hospitals. Circle 3 depicts the distribution of O-antigen serotypes. Circle 4 depicts the distribution of high-risk clone strains. Circles 5 to 10 depict the antibiotic susceptibilities to currently used antibiotics.
