An analysis of Neisseria meningitidis strains causing meningococcal septic arthritis in England and Wales: 2010-2020

George Gyamfi-Brobbey1, Stephen A Clark2, Helen Campbell3

  • 1Vaccine Evaluation Unit, UK Health Security Agency, Manchester Royal Infirmary, Oxford Road, Manchester, United Kingdom.

Abstract

Insights

Meningococcal septic arthritis is rare, affecting 2% of invasive meningococcal disease cases. Group B strains are less likely to cause septic arthritis compared to other groups.

Area of Science:

  • Clinical microbiology
  • Infectious diseases
  • Rheumatology

Background:

  • Invasive meningococcal disease (IMD) can lead to rare complications like septic arthritis.
  • Understanding the characteristics of meningococcal strains causing septic arthritis is crucial for public health.

Observation:

  • This study analyzed 162 cases of meningococcal septic arthritis in England and Wales between 2010 and 2020.
  • The knee and hip were most frequently affected joints, with age-related differences observed.
  • Group B meningococcal strains were less likely to cause septic arthritis than groups W, C, and Y.

Findings:

  • Meningococcal septic arthritis represents a small but significant proportion of IMD cases.
  • Specific joints are preferentially affected based on patient age.
  • There is a notable difference in the propensity of different meningococcal serogroups to cause septic arthritis.

Implications:

  • Meningococcal septic arthritis, though rare, warrants clinical awareness.
  • Further research is needed to elucidate the mechanisms behind strain and age associations.
  • Integrating clinical data may enhance understanding of this meningococcal complication.

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