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Updated: Sep 28, 2026

Experimental Human Pneumococcal Carriage
Published on: February 15, 2013
Neisseria meningitidis W135 pneumonia with sepicaemia in a nonogenarian
A M Cadwgan1, A R MacKenzie, R B Laing
1Infection Unit, Aberdeen Royal Infimary Foresterhill.
Abstract:
Neisseria meningitidis infection is generally considered a disease of children or young adults, classically presenting as meningitis or sepicaemia. This infection is rare but recognised in the elderly. We present the case of a nonogenarian with meningococcal pneumonia and sinusitis with bacteraemia caused by N.meningitidis W135 a rare serogroup. We therefore thought this unusual situation of interest and worthwhile reporting.
Insights
Neisseria meningitidis (N. meningitidis) infection is rare in the elderly. A nonogenarian developed pneumonia and sinusitis with bacteraemia caused by the rare W135 serogroup.
Area of Science:
- Infectious Diseases
- Microbiology
- Geriatric Medicine
Background:
- Neisseria meningitidis typically affects children and young adults.
- Classic presentations include meningitis and septicemia.
- Infections in the elderly are uncommon.
Observation:
- A case study of a nonogenarian patient is presented.
- The patient experienced meningococcal pneumonia and sinusitis.
- Bacteraemia was caused by N. meningitidis serogroup W135.
Findings:
- N. meningitidis W135, a rare serogroup, caused invasive disease in an elderly individual.
- Pneumonia and sinusitis were the primary clinical manifestations.
- The case highlights an unusual presentation of meningococcal infection.
Implications:
- This case expands the known demographic and clinical spectrum of N. meningitidis infections.
- It underscores the importance of considering meningococcal disease in elderly patients with respiratory and systemic symptoms.
- Further research may be warranted on meningococcal serogroup prevalence and disease patterns in geriatric populations.
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