Fig. 4

An evolutionary tree of 37 CRAB isolates based on WGS (26 isolates from the patients and 11isolates from the ICU environment). The genome sequence of Acinetobacter pittii CIP 70.29 obtained from the NCBI was served as a reference. There were three distinct clusters could be identified, namely A1, A2, and A3. Patient and environment sequences were named Pa.xx and Exx, respectively. WGS: Whole genome sequencing analysis; CRAB: Carbapenem resistant Acinetobacter baumannii; ICU: Intensive care unit; BALF: Bronchoalveolar lavage fluid