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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
12:18

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

Skin and soft tissue infections caused by community-associated methicillin-resistant staphylococcus aureus among

W Geng1, Y Yang, C Wang

  • 1Beijing Children's Hospital affiliated with the Capital Medical University, Beijing, China.

Acta Paediatrica (Oslo, Norway : 1992)
|January 9, 2010
PubMed

Insights

Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) skin infections in Chinese children are often impetigo. Panton-Valentine leukocidin (PVL)-positive strains frequently require incision and drainage, with ST59-MRSA-IV being the most common clone.

Area of Science:

  • Pediatric Infectious Diseases
  • Microbiology
  • Epidemiology

Background:

  • Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) causes significant skin and soft tissue infections (SSTIs) globally.
  • Understanding the specific characteristics of CA-MRSA SSTIs in pediatric populations is crucial for effective treatment and public health strategies.

Purpose of the Study:

  • To investigate the clinical characteristics and molecular epidemiology of CA-MRSA SSTIs in children within China.
  • To identify prevalent CA-MRSA clones and associated virulence factors.

Main Methods:

  • A cohort of 47 children diagnosed with CA-MRSA SSTIs was analyzed.
  • Clinical data were collected, and isolates underwent multilocus sequence typing (MLST), staphylococcal cassette chromosome mec (SCCmec) typing, spa typing, and Panton-Valentine leukocidin (PVL) gene detection.

Main Results:

  • Impetigo (42.6%) and abscesses (29.8%) were the most common CA-MRSA SSTIs.
  • PVL-positive strains were identified in 68.1% of cases, and PVL-positive abscesses were significantly more likely to require incision and drainage (87.5% vs. 16.7%).
  • The dominant clone was ST59-MRSA-IV with spa type t437 (46.8%), and isolates exhibited a high rate of multidrug resistance (93.6%).

Conclusions:

  • Impetigo is the most frequent CA-MRSA SSTI in Chinese children.
  • PVL-positive abscesses necessitate surgical intervention, highlighting the role of PVL in infection severity.
  • The ST59-MRSA-IV/t437 clone is prevalent, and high multidrug resistance rates underscore the need for vigilant antimicrobial stewardship.
Abstract

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