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Jin-Young Huh 1 Article
Incidence and risk factors associated with progression to severe pneumonia among adults with non-severe Legionella pneumonia
Jin-Young Huh, Sang-Ho Choi, Kyung-Wook Jo, Jin Won Huh, Sang-Bum Hong, Tae Sun Shim, Chae-Man Lim, Younsuck Koh
Acute Crit Care. 2022;37(4):543-549.   Published online October 21, 2022
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AbstractAbstract PDF
Legionella species are important causative organisms of severe pneumonia. However, data are limited on predictors of progression to severe Legionella pneumonia (LP). Therefore, the risk factors for LP progression from non-severe to the severe form were investigated in the present study. Methods: This was a retrospective cohort study that included adult LP patients admitted to a 2,700-bed referral center between January 2005 and December 2019. Results: A total of 155 patients were identified during the study period; 58 patients (37.4%) initially presented with severe pneumonia and 97 (62.6%) patients with non-severe pneumonia. Among the 97 patients, 28 (28.9%) developed severe pneumonia during hospitalization and 69 patients (71.1%) recovered without progression to severe pneumonia. Multivariate logistic regression analysis showed platelet count ≤150,000/mm3 (odds ratio [OR], 2.923; 95% confidence interval [CI], 1.100–8.105; P=0.034) and delayed antibiotic treatment >1 day (OR, 3.092; 95% CI, 1.167–8.727; P=0.026) were significant independent factors associated with progression to severe pneumonia. Conclusions: A low platelet count and delayed antibiotic treatment were significantly associated with the progression of non-severe LP to severe LP.


Citations to this article as recorded by  
  • Atraumatic Splenic Rupture in Legionella pneumophila Pneumonia
    Elliott Worku, Dominic Adam Worku, Salim Surani
    Case Reports in Infectious Diseases.2023; 2023: 1.     CrossRef
  • Short- and long-term prognosis of patients with community-acquired Legionella or pneumococcal pneumonia diagnosed by urinary antigen testing
    Leyre Serrano, Luis Alberto Ruiz, Silvia Perez-Fernandez, Pedro Pablo España, Ainhoa Gomez, Beatriz Gonzalez, Ane Uranga, Sonia Castro, Milagros Iriberri, Rafael Zalacain
    International Journal of Infectious Diseases.2023; 134: 106.     CrossRef
  • Case report: Fatal Legionella infection diagnosed via by metagenomic next-generation sequencing in a patient with chronic myeloid leukemia
    Chunhong Bu, Shuai Lei, Linguang Chen, Yanqiu Xie, Guoli Zheng, Liwei Hua
    Frontiers in Medicine.2023;[Epub]     CrossRef

ACC : Acute and Critical Care