Skip to Main content Skip to Navigation
Journal articles

Severe bilateral pleuropneumonia caused by Legionella sainthelensi: a case report

Abstract : Background: Legionella spp. are ubiquitous freshwater bacteria responsible for rare but potentially severe cases of Legionnaires' disease (LD). Legionella sainthelensi is a non-pneumophila Legionella species that was first isolated in 1980 from water near Mt. St-Helens (USA). Although rare cases of LD caused by L. sainthelensi have been reported, very little data is available on this pathogen. Case presentation: We describe the first documented case of severe bilateral pleuropneumonia caused by L. sainthelensi. The patient was a 35-year-old woman with Sharp's syndrome treated with long-term hydroxychloroquine and corticosteroids who was hospitalized for an infectious illness in a university hospital in Reunion Island (France). The patient's clinical presentation was complicated at first (bilateral pneumonia, multiloculated pleural effusion, then bronchopleural fistula) but her clinical condition eventually improved with the reintroduction of macrolides (spiramycin) in intensive care unit. Etiological diagnosis was confirmed by PCR syndromic assay and culture on bronchoalveolar lavage. Conclusions: To date, only 14 documented cases of L. sainthelensi infection have been described worldwide. This pathogen is difficult to identify because it is not or poorly detected by urinary antigen and molecular methods (like PCR syndromic assays that primarily target L. pneumophila and that have only recently been deployed in microbiology laboratories). Pneumonia caused by L. sainthelensi is likely underdiagnosed as a result. Clinicians should consider the possibility of non-pneumophila Legionella infection in patients with a compatible clinical presentation when microbiological diagnostic tools targeted L. pneumophila tested negative.
Document type :
Journal articles
Complete list of metadata

https://www.hal.inserm.fr/inserm-03356840
Contributor : Odile Malbec Connect in order to contact the contributor
Submitted on : Tuesday, September 28, 2021 - 2:35:36 PM
Last modification on : Tuesday, October 19, 2021 - 5:56:34 PM

File

s12879-021-06651-1.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Laure Kamus, Bénédicte Roquebert, Jérôme Allyn, Nicolas Allou, Dorothée Valance, et al.. Severe bilateral pleuropneumonia caused by Legionella sainthelensi: a case report. BMC Infectious Diseases, BioMed Central, 2021, 21 (1), pp.966. ⟨10.1186/s12879-021-06651-1⟩. ⟨inserm-03356840⟩

Share

Metrics

Record views

77

Files downloads

38