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Updated: Aug 2, 2026

Measuring Bacterial Load and Immune Responses in Mice Infected with Listeria monocytogenes
Published on: August 9, 2011
[Listeriosis in the adult. Revision of 10 cases]
I M Arias Miranda1, F J Nuño Mateo, J Noval Menéndez
1Servicio de Medicina Interna, Hospital de Cabueñes, Gijón, Asturias. ariasmir@yahoo.es
Abstract:
Listeria monocytogenes is still a very rare opportunist infection in immunosuppressive patients. The clinical-epidemiological and therapeutic characteristics in 10 patients with infection produced by LM are reported--four of them had primary bacteriemia, three patients had a meningeal involvement, there were two patients with spontaneous bacterial peritonitis and one suffered from abdominal access. All of the patients had underlying disorders favouring the infection. Sepsis and meningeal syndrome were the most common presenting forms. Ampicillin was the most used antibiotic. The overall mortality was 40%.
Insights
Listeria monocytogenes (LM) infections are rare in immunosuppressed patients, often presenting as sepsis or meningitis. This study highlights clinical features and a high mortality rate of 40% in these vulnerable individuals.
Area of Science:
- Infectious Diseases
- Clinical Microbiology
- Immunocompromised Host
Background:
- Listeria monocytogenes (LM) is an opportunistic pathogen.
- Infections in immunosuppressed patients are rare but severe.
- Understanding clinical-epidemiological and therapeutic characteristics is crucial.
Observation:
- A study of 10 immunosuppressed patients with LM infections was conducted.
- Infections presented as primary bacteremia (4), meningeal involvement (3), spontaneous bacterial peritonitis (2), and abdominal access (1).
- Underlying disorders predisposing to infection were present in all patients.
Findings:
- Sepsis and meningeal syndrome were the most frequent clinical presentations.
- Ampicillin was the predominant antibiotic used for treatment.
- The overall mortality rate associated with LM infection was 40%.
Implications:
- Early recognition and appropriate management of LM infections are critical in immunosuppressed populations.
- The high mortality rate underscores the severity of these infections.
- Further research into optimal therapeutic strategies may improve outcomes.
Related Concept Videos
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Bacterial Meningitis I: Introduction
Encephalitis l: Introduction
Brain Abscess l: Introduction

