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Community-acquired Methicillin-resistant Staphylococcus aureus Infection in Children: Key Features and Comparison to

Blanca Bravo-Queipo-de-Llano1,2,3, Beatriz Jiménez4, Marc García-Lorenzo5

  • 1From the Pediatrics and Infectious and Tropical Diseases Department, La Paz University Hospital, La Paz Research Institute (IdiPAZ), Madrid, Spain.

The Pediatric Infectious Disease Journal
|June 5, 2025
PubMed
Summary
This summary is machine-generated.

Community-acquired Methicillin-resistant Staphylococcus aureus (CA-MRSA) infections in children are linked to migrant status and Panton-Valentine leucocidin (PVL) toxin. High antibiotic resistance necessitates tailored treatment strategies for pediatric MRSA infections.

Keywords:
childrencolonizationcommunity-acquired infectionmethicillin-resistant

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Area of Science:

  • Pediatric infectious diseases
  • Microbiology
  • Public health

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant threat, causing skin and soft tissue infections (SSTIs) and severe complications in children.
  • Panton-Valentine leucocidin (PVL) is a key virulence factor increasing MRSA pathogenicity.
  • Community-acquired MRSA (CA-MRSA) infections in pediatric populations require investigation into their epidemiology, antibiotic resistance, and PVL production.

Purpose of the Study:

  • To investigate the epidemiology, antibiotic resistance, and PVL production of CA-MRSA infections in children.
  • To identify risk factors associated with CA-MRSA infections in pediatric patients.
  • To compare characteristics of CA-MRSA causing infection versus colonization.

Main Methods:

  • A nationwide multicenter retrospective study in Spain (2018-2020) analyzed 252 children under 18 with CA-MRSA infections.
  • Data collected included epidemiologic, clinical, and microbiologic information, focusing on antibiotic susceptibility and PVL production.
  • Statistical analyses, including multivariate logistic regression, were used to identify infection-associated factors.

Main Results:

  • Skin and soft tissue infections (SSTIs) were the most common presentation (89.3%), with 23.6% requiring hospitalization.
  • Migrant status (52.5%) and prior SSTIs (39.1%) were significantly associated with CA-MRSA infection (P < 0.05).
  • PVL genes were detected in 76.9% of MRSA strains, significantly more frequent in infection than colonization (P < 0.001). High resistance to ciprofloxacin (32.2%) and clindamycin (18.3%) was observed.

Conclusions:

  • Migrant status and PVL toxin production are significant risk factors for pediatric CA-MRSA infections.
  • High antibiotic resistance rates underscore the need for treatment strategies based on local resistance patterns.
  • PVL prevalence is higher in CA-MRSA infections compared to colonization in children.