MRSA nasal colonization in children: prevalence meta-analysis, review of risk factors and molecular genetics

Francesco Gesualdo1, Dafne Bongiorno, Caterina Rizzo

  • 1Bambino Gesù Children's Hospital, Rome, Italy. f.gesualdo@gmail.com

Abstract

Insights

Methicillin-resistant Staphylococcus aureus (MRSA) nasal colonization in children has a prevalence of 2.7%. Children with underlying conditions and hospital settings show higher MRSA prevalence, highlighting the need for tailored prevention strategies.

Area of Science:

  • Pediatric Infectious Diseases
  • Microbiology
  • Epidemiology

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant public health concern.
  • Understanding MRSA nasal colonization in children is crucial for infection control.
  • Risk factors and genetic characterization of MRSA in pediatric populations require detailed analysis.

Purpose of the Study:

  • To conduct a meta-analysis on the prevalence of MRSA nasal colonization in children.
  • To review associated risk factors and molecular genetic characteristics of MRSA.
  • To inform public health strategies for MRSA prevention in pediatric care.

Main Methods:

  • Systematic literature search of MEDLINE database for studies published between January 2000 and August 2010.
  • Inclusion of studies reporting MRSA nasal colonization prevalence data in children.
  • Meta-analysis and statistical analysis of retrieved data.

Main Results:

  • A total of 50 studies were included after screening 544.
  • Overall MRSA nasal colonization prevalence in children was estimated at 2.7%.
  • Higher prevalence observed in children with underlying conditions (5.2%) and in hospital settings (5.4%) compared to healthy children (2.3%) and community settings (3%).
  • Staphylococcal cassette chromosome mec type IV was identified as the most prevalent type globally.

Conclusions:

  • Hospitals are primary environments for MRSA circulation.
  • Children with underlying conditions may serve as vectors between hospital and community settings.
  • MRSA prevention strategies must be individualized based on institutional and community-specific prevalence data.

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