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Published on: February 23, 2014
Bacteremic W-135 meningococcal pneumonia
Abstract:
Two epidemiologically unrelated cases of bacteremic meningococcal pneumonia are reported. Both patients were civilians without antecedent viral illness. The organism involved was Neisseria meningitidis, Group W-135, a serogroup of rapidly increasing importance in the United States. The difficulties in diagnosis and scope of meningococcal pneumonia are discussed.
Insights
Two cases of bacteremic meningococcal pneumonia caused by Neisseria meningitidis Group W-135 were reported. This serogroup is increasingly important in the US, highlighting diagnostic challenges.
Area of Science:
- Infectious Diseases
- Bacteriology
- Pulmonary Medicine
Background:
- Neisseria meningitidis is a significant bacterial pathogen.
- Meningococcal disease typically presents as meningitis or sepsis.
- Pneumonia is an less common manifestation of meningococcal infection.
Observation:
- Two civilian patients presented with bacteremic meningococcal pneumonia.
- Neither patient had a preceding viral illness.
- The causative agent was identified as Neisseria meningitidis, Group W-135.
Findings:
- Neisseria meningitidis Group W-135 was confirmed as the cause of pneumonia in both cases.
- The cases were epidemiologically unrelated.
- The study highlights the diagnostic difficulties associated with meningococcal pneumonia.
Implications:
- Neisseria meningitidis Group W-135 is an emerging cause of invasive disease in the US.
- Increased awareness of meningococcal pneumonia is crucial for timely diagnosis and treatment.
- Further research into the clinical spectrum and epidemiology of meningococcal infections is warranted.
Related Concept Videos
Bacterial Meningitis
Atypical Pneumonia
Viral Meningitis
Cryptococcal Meningitis
Bacterial Meningitis I: Introduction
Bacterial Meningitis II: Pathophysiology

