• Gaofeng Pan, Maoying Fu, Huihui Ni, Wei Zhang, Yi Yao, Yingcong Xie, Jing Li, Yijia Zhang, Yuting Wang, Kexing Han, and Yufeng Gao.
• Department of Infectious Diseases, The First People's Hospital of Kunshan, Kunshan, Jiangsu, China.
• Postgrad Med. 2024 Aug 1; 136 (6): 678682678-682.

BackgroundLegionella maceachernii pneumonia is a severe respiratory infection with low incidence but high mortality. However, the optimal treatment for this disease remains unclear. We report a case of successful treatment of Legionella maceachernii pneumonia, which is the first report of such a case in China.Case PresentationAn 87-year-old man with concomitant chronic obstructive pulmonary disease, liver cirrhosis, and history of left nephrectomy was diagnosed with Legionella maceachernii pneumonia using Dano-seq pathogen metagenomic testing. After two weeks of treatment with cefoperazone/sulbactam combined with quinolone antibiotics, the patient showed improvement and was discharged. The patient continued to take oral quinolone antibiotics for one week after discharge and recovered during outpatient follow-up.ConclusionsDano-seq pathogen metagenomic testing can rapidly diagnose Legionella maceachernii pneumonia, and taking quinolone antibiotics is an effective treatment.

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