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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
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Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA

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Investigation of methicillin resistant Staphylococcus aureus in neonatal intensive care unit

Harun Ağca1, Tuncay Topaç1, Gülşah Ece Ozmerdiven1

  • 1Department of Medical Microbiology, Uludağ University Faculty of Medicine Bursa, Turkey.

International Journal of Clinical and Experimental Medicine
|September 19, 2014
PubMed

Insights

This study investigated a Methicillin-resistant Staphylococcus aureus (MRSA) outbreak in a Neonatal Intensive Care Unit. Molecular analysis revealed two distinct MRSA strains, with most isolates belonging to a single clone, aiding outbreak termination.

Area of Science:

  • Medical Microbiology
  • Infectious Diseases
  • Epidemiology

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant threat, causing severe infections in vulnerable populations like premature infants.
  • A Neonatal Intensive Care Unit (NICU) experienced an outbreak involving 27 MRSA strains, necessitating an investigation into their genetic and epidemiological links.

Purpose of the Study:

  • To determine the genetic and epidemiological relationship between MRSA strains isolated during a NICU outbreak.
  • To identify the clonal origin of the MRSA outbreak and inform control strategies.

Main Methods:

  • Detection of the MecA gene in all isolated Staphylococcus aureus strains.
  • Pulsed-field gel electrophoresis (PFGE) was employed to analyze the genetic relatedness of the MRSA isolates.

Main Results:

  • The MecA gene, indicative of methicillin resistance, was present in all investigated S. aureus isolates.
  • PFGE analysis identified two distinct MRSA strains within the outbreak; 25 out of 27 isolates belonged to the same predominant clone.
  • One isolate showed close genetic similarity to the main clone, while another was genetically unrelated.

Conclusions:

  • Molecular typing, specifically PFGE, is crucial for understanding the epidemiology and evolution of MRSA outbreaks.
  • Effective outbreak management requires a combination of stringent infection control measures and laboratory-based molecular analysis to identify and control the source.
Keywords:
PFGEStaphylococcus aureusneonataloutbreak

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