We report an uncommon presentation of Legionella pneumophila infection following a placentalblood transplantation in an immunodeficient child. The patient presented with lung nodules and liver abscesses. We discuss how a digestive contamination can be suspected.
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Occurrence of macrolides resistance in Legionella pneumophila ST188: results of the Belgian epidemiology and resistome investigation of clinical isolates.
Int J Infect Dis
January 2025
National reference centre for Legionella pneumophila, Department of Microbiology, Universitair Ziekenhuis Brussel (UZ Brussel), Vrije Universiteit Brussel (VUB), Laarbeeklaan 101, 1090 Brussels, Belgium.
Introduction: The incidence of Legionnaires' disease (LD) steadily increases worldwide. Although Legionella pneumophila is known as pathogenic, systematic investigations into antibiotic resistance are scarce, and reports of resistance in isolates are recently emerging.
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Severe pneumonia due to concurrent Legionella pneumophila and Acinetobacter baumannii infections: a case report.
BMC Pulm Med
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Department of Respiratory and Critical Care Medicine, Lishui Hospital of Traditional Chinese Medicine Affiliated to Zhejiang University of Traditional Chinese Medicine, No. 800 Zhongshan Road, Liandu District, Lishui, Zhejiang, 323000, China.
Background: Legionella pneumophila is an uncommon pathogen causing community-acquired atypical pneumonia. Acinetobacter baumannii is a major pathogen responsible for hospital-acquired pneumonia, but it rarely causes serious infections in a community setting. Without prompt and appropriate treatments, infection from either of these two pathogens can cause a high mortality rate.
View Article and Find Full Text PDFAntimicrobial susceptibility and epidemiological types of Legionella pneumophila human isolates from Italy (1987-2020).
J Glob Antimicrob Resist
January 2025
Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Italy; ESCMID Study Group for Legionella Infections (ESGLI), Basel, Switzerland. Electronic address:
Background: Although antimicrobial resistance has not yet emerged as an overarching problem for Legionella pneumophila (Lp) infection, the description of clinical and environmental strains resistant to fluoroquinolones and macrolides is a cause of concern. This study aimed to investigate the antimicrobial susceptibility of Lp human isolates in Italy.
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Rapid Icm/Dot T4SS Inactivation Prevents Resuscitation of Heat-Induced VBNC Legionella pneumophila by Amoebae.
Environ Microbiol
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Institute of Medical Microbiology, University of Zürich, Zürich, Switzerland.
Legionella pneumophila, the causative agent of Legionnaires' disease, employs the Icm/Dot Type IV secretion system (T4SS) to replicate in amoebae and macrophages. The opportunistic pathogen responds to stress by forming 'viable but non-culturable' (VBNC) cells, which cannot be detected by standard cultivation-based techniques. In this study, we document that L.
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