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[Primary meningococcal conjunctivitis: implications beyond the conjunctiva]
F A Moraga Llop1, N Barquet Esteve, P Domingo Pedrol
1Hospital Universitario Materno-Infantil Vall d'Hebron, Universitat Autònoma, Barcelona.
Background:
Neisseria meningitidis is a uncommon cause of acute bacterial conjunctivitis. However, its diagnosis has important therapeutic implications.
Methods:
From December 1993 to January 1984, a prospective study on acute bacterial conjunctivitis was performed at the Hospital Universitario Materno-Infantil Vall d'Hebron. Primary meningococcal conjunctivitis (PMC) was diagnosed in 34 patients. The diagnosis of PMC was made on the basis of consistent clinical manifestations together with isolation of Neisseria meningitidis from conjunctival exudate culture.
Results:
There were 16 men and 18 women with a mean age of 3.5 +/- 3.3 years. PMC was bilateral in 7 patients and unilateral in 27. Initial therapy for PMC included only topical antibiotics in 24 patients and systemic antibiotic therapy in 10. Ten patients (29.4%) developed invasive meningococcal disease. None of the patients died neither developed ocular sequelae. Forty one percent of the patients who received only topical therapy and none [corrected] of those who received systemic therapy, developed invasive meningococcal disease (p = 0.04).
Conclusions:
PMC may represent the portal of entry for invasive meningococcal disease, which occurs in almost a third of patients. Patients with PMC and higher risk of developing invasive meningococcal disease are those treated only with topical antibiotic therapy.
Insights
Primary meningococcal conjunctivitis (PMC) can lead to invasive meningococcal disease in nearly a third of patients. Systemic antibiotic therapy is crucial, as topical-only treatment increases the risk of invasive complications.
Area of Science:
- Ophthalmology
- Infectious Diseases
- Microbiology
Context:
- Neisseria meningitidis is an infrequent cause of bacterial conjunctivitis.
- Accurate diagnosis of meningococcal conjunctivitis is critical due to potential systemic implications.
Purpose:
- To investigate the incidence and outcomes of primary meningococcal conjunctivitis (PMC).
- To determine the risk factors associated with the progression of PMC to invasive meningococcal disease.
Summary:
- A prospective study identified 34 cases of PMC. Ten patients (29.4%) developed invasive meningococcal disease.
- Patients treated solely with topical antibiotics had a significantly higher risk of developing invasive disease compared to those receiving systemic therapy (p=0.04).
- No deaths or ocular sequelae were reported; PMC may serve as an entry point for invasive disease.
Impact:
- Highlights the importance of considering Neisseria meningitidis in bacterial conjunctivitis cases.
- Suggests that systemic antibiotic therapy should be strongly considered in managing PMC to prevent invasive complications.
- Informs clinical practice regarding the appropriate management of bacterial conjunctivitis potentially caused by Neisseria meningitidis.