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Evolving technology and the development of new devices that can aerosolize water present a risk for new sources of Legionella bacteria growth and spread within industrial settings. We investigated a cluster of legionellosis among employees of a manufacturing facility in South Carolina, USA, and found 2 unique equipment sources of Legionella bacteria. The cluster of cases took place during August-November 2022; a total of 34 cases of legionellosis, including 15 hospitalizations and 2 deaths, were reported.
View Article and Find Full Text PDFComparison of whole genome sequencing typing tools for the typing of Belgian Legionella pneumophila outbreaks isolates.
Eur J Clin Microbiol Infect Dis
December 2024
Department of Microbiology and Infection Control, National Reference Centre for Legionella Pneumophila, Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Laarbeeklaan 101, 1090, Brussels, Belgium.
Whole genome sequencing (WGS) marks a turning point for outbreak investigations for microorganisms related to public health matters, like Legionella pneumophila (Lp). Here, we evaluated the available Lp WGS typing tools for isolates of previously documented Belgian outbreaks, as well as small groups of related and non-related isolates. One reference strain and 77 clinical and environmental isolates were evaluated.
View Article and Find Full Text PDFIncorporating incubation period distributions to precisely estimate the association between rainfall and Legionella infection.
J Infect Dis
December 2024
Department of Epidemiology of Microbial Diseases, Yale School of Public Health; New Haven CT, USA.
Background: Multiple studies have shown a positive relationship between weather events and, 1 to 2 weeks later, Legionnaires' disease (LD) cases. Narrowing this time window of association can help determine whether the mechanism linking rainfall and relative humidity to sporadic LD is direct or indirect. Due to the large number of daily water interactions and low incidence of LD, we propose a new Bayesian modeling approach to disentangle the potential for a direct vs.
View Article and Find Full Text PDFGenomic perspective on the bacillus causing paratyphoid B fever.
Nat Commun
December 2024
Institut Pasteur, Université Paris Cité, Unité des Bactéries pathogènes entériques, Paris, F-75015, France.
Paratyphoid B fever (PTB) is caused by an invasive lineage (phylogroup 1, PG1) of Salmonella enterica serotype Paratyphi B (SPB). However, little was known about the global population structure, geographic distribution, and evolution of this pathogen. Here, we report a whole-genome analysis of 568 historical and contemporary SPB PG1 isolates, obtained globally, between 1898 and 2021.
View Article and Find Full Text PDF- Pulmonary Coinfection in a COVID-19 Patient: Case Report.
Infect Dis Rep
November 2024
Medical Specialties Department, Iuliu Hatieganu University of Medicine and Pharmacy, 400 012 Cluj-Napoca, Romania.
Article Synopsis
- - The case details a 76-year-old man with severe COVID-19 and ground-glass pneumonia affecting 40-45% of his lungs, leading to complications during his hospitalization.
- - Diagnostic tests revealed the presence of bacteria linked to Legionnaire's disease and ventilator-associated pneumonia, highlighting the complexity of treating patients with COVID-19.
- - The study emphasizes the importance of recognizing rare pneumonias and their potential co-infections in COVID-19 cases to help improve early diagnosis and potentially reduce mortality rates.
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