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Introduction:Endocarditis is the infection of the endocardium, the inner lining of the heart and its valves. When the heart muscle is involved, the condition is termed myocarditis, while an infection of the outer lining is called pericarditis. Infective endocarditis (IE) primarily affects the endocardium, where pathogens adhere to the valves or lining, forming vegetation that can lead to severe complications. Infective endocarditis occurs when microorganisms, usually bacteria from other body...

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Updated: May 25, 2026

Use of Galleria mellonella as a Model Organism to Study Legionella pneumophila Infection

Use of Galleria mellonella as a Model Organism to Study Legionella pneumophila Infection

Published on: November 22, 2013

Legionella longbeachae and endocarditis.

Nicola Leggieri¹, Frédérique Gouriet, Frank Thuny

¹Laboratoire de Microbiologie, Centre Hospitalier Universitaire de La Timone, 264 Rue Saint Pierre, 13385 Marseille Cedex 5, France.

Emerging Infectious Diseases

|January 21, 2012

Summary

This summary is machine-generated.

Legionella longbeachae, typically causing lung infections, can also lead to infectious endocarditis. This bacterium, found in compost, poses a risk during gardening activities involving potting soils.

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Area of Science:

Infectious Diseases
Cardiology
Microbiology

Background:

Legionella longbeachae is a bacterium primarily known for causing respiratory infections.
It is commonly found in environmental sources, particularly composted waste and potting soils.

Observation:

This report details a rare case of infectious endocarditis caused by L. longbeachae.
The patient's condition developed in the context of activities involving exposure to potting soil.

Findings:

L. longbeachae can manifest as an etiological agent of infectious endocarditis, extending beyond its typical pulmonary associations.
This case highlights the potential for L. longbeachae to infect heart valves.

Implications:

Legionella longbeachae should be recognized as a potential cause of infectious endocarditis.
Healthcare providers should consider L. longbeachae in cases of endocarditis, especially in individuals with relevant occupational or hobby-related exposures, such as gardening.