AUTHOR=Liu Zeshi , Shen Siquan , Zhang Xue , Lei Jing , Tang Chengkang , Wu Shi , Lei Ke , Yin Jian , Zhang Yanping , Guo Yan , Geng Yan , Hu Fupin TITLE=Identification of CMY-190, a novel chromosomally encoded AmpC β-lactamase, and plasmid-encoded KPC-2 in a clinical isolate of Citrobacter youngae JOURNAL=Frontiers in Microbiology VOLUME=Volume 16 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2025.1526882 DOI=10.3389/fmicb.2025.1526882 ISSN=1664-302X