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Acute septic arthritis caused by Neisseria meningitidis serogroup W-135

Insights

Neisseria meningitidis serogroup W-135 can cause acute septic arthritis in children. Early diagnosis and penicillin G treatment led to complete recovery in a young patient.

Area of Science:

  • Microbiology
  • Pediatric Infectious Diseases
  • Rheumatology

Background:

  • Neisseria meningitidis is a significant bacterial pathogen.
  • Meningococcal disease can manifest in various forms, including invasive infections.
  • Septic arthritis is a joint infection that requires prompt medical attention.

Observation:

  • A 22-month-old child presented with acute septic arthritis of the left knee.
  • Blood cultures identified Neisseria meningitidis, serogroup W-135, as the causative agent.
  • The child received treatment with penicillin G.

Findings:

  • Complete recovery was achieved following antibiotic treatment.
  • Neisseria meningitidis serogroup W-135 was confirmed as the pathogen responsible for the septic arthritis.
  • The case highlights a potential initial presentation of invasive disease.

Implications:

  • Acute septic arthritis can be an early clinical manifestation of Neisseria meningitidis serogroup W-135 infection.
  • This case underscores the importance of considering meningococcal disease in pediatric septic arthritis.
  • Prompt identification and appropriate antibiotic therapy are crucial for favorable outcomes.

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