Neisseria meningitidis conjunctivitis in children
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Updated: Sep 28, 2026

Visualisation and Quantification of Intracellular Interactions of Neisseria meningitidis and Human α-actinin by Confocal Imaging
Published on: October 25, 2010
Abstract:
We examined two children from the same family who had purulent conjunctivitis. Isolates of Neisseria species were obtained from eye cultures and Gram stain of conjunctival scrapings disclosed many gram-negative intracellular diplococci. Colony structure and growth characteristics of the organism with subsequent carbohydrate fermentation tests and serotyping were consistent with Neisseria meningitidis Group B. The patients had no neurologic signs or symptoms. Results of laboratory investigations and blood cultures were normal. Early diagnosis is mandatory and aggressive systemic therapy with appropriate antibiotics may prevent ocular, neurologic, or systemic complications.
Insights
Purulent conjunctivitis in two siblings was caused by Neisseria meningitidis Group B. Early diagnosis and aggressive antibiotic treatment are crucial to prevent serious complications from this bacterial eye infection.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Microbiology
Background:
- Purulent conjunctivitis can have various etiologies.
- Neisseria species are known pathogens that can cause serious infections.
Observation:
- Two siblings presented with purulent conjunctivitis.
- Gram stain revealed gram-negative intracellular diplococci in conjunctival scrapings.
Findings:
- Isolates were identified as Neisseria meningitidis Group B based on morphology, growth, fermentation, and serotyping.
- Patients showed no neurological symptoms and had normal blood work.
Implications:
- Early diagnosis of Neisseria meningitidis conjunctivitis is critical.
- Prompt systemic antibiotic therapy is essential to prevent ocular, neurological, and systemic sequelae.
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